Cot Mattress Protector | Waterproof | Zippered Encasement
Dust mite cot mattress protector — waterproof, zippered
A waterproof cot mattress encasement that seals your cot mattress on all six sides, keeping dust mite allergens trapped inside and blocking spills, drool, and accidents.
Cot mattresses accumulate skin cells over time, making them a dust mite allergen reservoir in the nursery.
The microporous TPU membrane creates a barrier against the fine particles that carry those allergens (typically 10–40 microns), while also being waterproof. A fitted cot sheet goes over the top.
Safe sleep notice: This protector fits over the cot mattress, under your child’s fitted sheet — it is not loose bedding. Always follow Red Nose Australia’s safe sleeping guidance: place baby on their back, feet at the foot of the cot, and keep the cot bare of loose items for infants under 12 months. The sheet must fit snugly with no loose fabric on the sleep surface.
What makes a dust mite cot mattress protector (waterproof) effective
A microporous TPU membrane with pores measured at around 0.16 microns — far smaller than the 10–40 micron particles that carry dust mite allergens — laminated behind a soft, silent jersey outer, with a full zippered closure on all six sides.
- Dust mite allergen barrier — pores well below allergen-particle size, so dust mite waste stays sealed inside the cot mattress.
- Waterproof TPU lining — blocks spills, drool, and accidents; the cot mattress stays dry.
- Microporous and breathable — the membrane lets water vapour through, so it breathes rather than trapping heat like a solid PVC sheet.
- Enclosed binding seams — fabric edges sealed inside a bound seam, so the barrier stays continuous along every join.
- Full zippered closure — fully encloses all six sides of the cot mattress.
- Soft, silent, stretchy — the jersey outer feels like fabric, not plastic. No crinkle when your child moves.
The pore-size detail (third-party tested)
Dust mite allergens are carried by fecal pellets and body fragments that typically measure 10 to 40 microns. According to test data supplied by the manufacturer, Fifth Ridge Pty Ltd, this fabric’s TPU membrane has pores measured at approximately 0.16 microns at maximum distribution (third-party capillary flow porometry, Galwick fluid) — well below that range, which is why the fabric can be used as a particle barrier. The full zippered closure encloses all six sides of the cot mattress. We have not independently conducted this testing; the figures are reproduced in good faith from the manufacturer.
Materials & specifications
| Fabric outer | 90gsm polyester knitted jersey |
|---|---|
| Lining | 0.2mm microporous TPU (thermoplastic polyurethane) waterproof membrane |
| Pore size | Approximately 0.16 microns at maximum distribution (capillary flow porometry, Galwick fluid). Figures supplied by the manufacturer, Fifth Ridge Pty Ltd, from third-party testing. |
| Sizes | Standard AU — 130×69×13cm | Standard US — 120×60×13cm |
| Closure | Full zippered closure, encloses all six sides |
| Waterproof | Yes — TPU membrane blocks liquid spills and accidents |
| Warranty | 10-year product warranty (excludes misuse, improper washing, or damage) |
What the research says about mattress encasings
A 2003 randomised controlled trial published in the Journal of Allergy and Clinical Immunology (Halken et al.) tested mattress and pillow encasings against placebo encasings in children with asthma and dust mite allergy. The trial found that the active encasings produced a significant long-term reduction in dust mite allergen concentrations in mattresses over 12 months.
This is a finding of that independent study, reported here for general information. Individual results vary, and this product is intended to be used alongside other dust mite reduction measures.
Who this dust mite cot mattress protector is for
Best for parents wanting waterproof spill protection and a dust mite barrier on a standard AU or US cot mattress.
Commonly chosen by
- Anyone building a dust mite barrier across the home, including the nursery
- Parents who want waterproof accident protection and a dust mite barrier in one product
- Parents of infants transitioning to a bed who want waterproof and allergen protection
Probably not the right fit if
- You prefer 100% natural cotton — see our cotton cot mattress protector (OEKO-TEX certified, more breathable, not waterproof)
- Your cot mattress differs significantly from the listed sizes — measure first and contact us if unsure
How to fit it safely
Fitting correctly matters for both barrier integrity and safe sleep. The protector must sit flat with no loose fabric on the sleep surface.
Step-by-step fitting
- Remove the cot mattress and any existing bedding.
- Unzip the protector fully and slide it over the mattress, ensuring all six sides are covered.
- Close the zipper completely — there should be no gap.
- Smooth the fabric flat with no loose, bunched, or excess fabric on the sleep surface.
- Place the cot mattress back in the cot.
- Fit a tight-fitting cot sheet over the top — snug with no loose fabric or wrinkles.
- Follow Red Nose Australia safe sleeping guidance: keep the cot bare with no pillows, blankets, soft toys, or padded items for infants under 12 months.
Choosing the right size
Standard Australian cot mattresses are 130×69cm (13cm deep). US-imported cot mattresses are typically 120×60cm (13cm deep). The knitted jersey has stretch to accommodate slight size variations. Measure your cot mattress before ordering — if it differs significantly from these sizes, contact us before purchasing.
Care
Wash before first use. Then every 3–6 months, or sooner after a spill or accident. Warm or gentle cycle — do not exceed 60°C. Skip bleach and fabric softeners to protect the TPU membrane.
Full care instructions
- Before first use: wash the protector before fitting, to remove any production residues (manufacturer-recommended).
- Wash: warm or gentle cycle. Do not exceed 60°C — high heat can damage the TPU membrane over time.
- Dry: tumble dry low/medium or air dry. Avoid hot dryers.
- Frequency: every 3–6 months when a fitted cot sheet sits over the top. Wash sooner after any spill, leak, or illness.
- Lifespan: over 4–5 years, prolonged exposure to body fluids can cause the TPU membrane to break down. Using a fitted cot sheet on top significantly extends the lifespan.
- Avoid: bleach, fabric softeners, dry cleaning, ironing, and any oils or strong detergents.
Dust mite cot mattress protector FAQs
Will it fit my cot mattress?
Measure your cot mattress before ordering. Standard Australian cot mattresses are 130×69cm; US-imported cots are typically 120×60cm. The knitted jersey stretches to accommodate slight variations. Contact us if your mattress differs significantly from these sizes.
Is this safe for infants?
The protector fits over the cot mattress under a tight-fitting cot sheet — it is not loose bedding. Always follow Red Nose Australia’s safe sleeping guidance. The sheet must fit snugly with no loose fabric on the sleep surface.
Is this an alternative to following Red Nose Australia safe sleep guidelines?
No — it fits within those guidelines, not around them. Red Nose Australia’s bare-cot recommendation (no loose blankets, pillows, soft toys, or padded items for infants under 12 months) still applies fully. The protector sits under your child’s fitted sheet, not loose inside the cot.
What’s the difference between this and the cotton cot protector?
Both can be used as a barrier against dust mite particles. This waterproof version has a TPU lining that also blocks liquid spills, drool, and accidents — better for younger infants or during toilet training. The cotton cot protector is 100% natural cotton, OEKO-TEX certified, and more breathable, but is not waterproof.
Should I discuss this with my GP or paediatrician first?
If your child has a diagnosed allergy, eczema, asthma, or any other medical condition, yes — your GP, paediatrician, or allergist is the right person to advise on whether barrier bedding suits your child’s situation. We describe what the fabric measurably does; we don’t make claims about medical conditions.
Does it feel like plastic? Will it make my child hot?
The TPU membrane is laminated behind a soft polyester knitted jersey outer, so the surface feels like fabric — no plastic crinkle. The TPU membrane is microporous, which means it allows water vapour through, so it breathes more than a solid PVC or vinyl sheet. It is not as breathable as the cotton version.
Original: $27.29
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Cot Mattress Protector | Waterproof | Zippered Encasement
Dust mite cot mattress protector — waterproof, zippered
A waterproof cot mattress encasement that seals your cot mattress on all six sides, keeping dust mite allergens trapped inside and blocking spills, drool, and accidents.
Cot mattresses accumulate skin cells over time, making them a dust mite allergen reservoir in the nursery.
The microporous TPU membrane creates a barrier against the fine particles that carry those allergens (typically 10–40 microns), while also being waterproof. A fitted cot sheet goes over the top.
Safe sleep notice: This protector fits over the cot mattress, under your child’s fitted sheet — it is not loose bedding. Always follow Red Nose Australia’s safe sleeping guidance: place baby on their back, feet at the foot of the cot, and keep the cot bare of loose items for infants under 12 months. The sheet must fit snugly with no loose fabric on the sleep surface.
What makes a dust mite cot mattress protector (waterproof) effective
A microporous TPU membrane with pores measured at around 0.16 microns — far smaller than the 10–40 micron particles that carry dust mite allergens — laminated behind a soft, silent jersey outer, with a full zippered closure on all six sides.
- Dust mite allergen barrier — pores well below allergen-particle size, so dust mite waste stays sealed inside the cot mattress.
- Waterproof TPU lining — blocks spills, drool, and accidents; the cot mattress stays dry.
- Microporous and breathable — the membrane lets water vapour through, so it breathes rather than trapping heat like a solid PVC sheet.
- Enclosed binding seams — fabric edges sealed inside a bound seam, so the barrier stays continuous along every join.
- Full zippered closure — fully encloses all six sides of the cot mattress.
- Soft, silent, stretchy — the jersey outer feels like fabric, not plastic. No crinkle when your child moves.
The pore-size detail (third-party tested)
Dust mite allergens are carried by fecal pellets and body fragments that typically measure 10 to 40 microns. According to test data supplied by the manufacturer, Fifth Ridge Pty Ltd, this fabric’s TPU membrane has pores measured at approximately 0.16 microns at maximum distribution (third-party capillary flow porometry, Galwick fluid) — well below that range, which is why the fabric can be used as a particle barrier. The full zippered closure encloses all six sides of the cot mattress. We have not independently conducted this testing; the figures are reproduced in good faith from the manufacturer.
Materials & specifications
| Fabric outer | 90gsm polyester knitted jersey |
|---|---|
| Lining | 0.2mm microporous TPU (thermoplastic polyurethane) waterproof membrane |
| Pore size | Approximately 0.16 microns at maximum distribution (capillary flow porometry, Galwick fluid). Figures supplied by the manufacturer, Fifth Ridge Pty Ltd, from third-party testing. |
| Sizes | Standard AU — 130×69×13cm | Standard US — 120×60×13cm |
| Closure | Full zippered closure, encloses all six sides |
| Waterproof | Yes — TPU membrane blocks liquid spills and accidents |
| Warranty | 10-year product warranty (excludes misuse, improper washing, or damage) |
What the research says about mattress encasings
A 2003 randomised controlled trial published in the Journal of Allergy and Clinical Immunology (Halken et al.) tested mattress and pillow encasings against placebo encasings in children with asthma and dust mite allergy. The trial found that the active encasings produced a significant long-term reduction in dust mite allergen concentrations in mattresses over 12 months.
This is a finding of that independent study, reported here for general information. Individual results vary, and this product is intended to be used alongside other dust mite reduction measures.
Who this dust mite cot mattress protector is for
Best for parents wanting waterproof spill protection and a dust mite barrier on a standard AU or US cot mattress.
Commonly chosen by
- Anyone building a dust mite barrier across the home, including the nursery
- Parents who want waterproof accident protection and a dust mite barrier in one product
- Parents of infants transitioning to a bed who want waterproof and allergen protection
Probably not the right fit if
- You prefer 100% natural cotton — see our cotton cot mattress protector (OEKO-TEX certified, more breathable, not waterproof)
- Your cot mattress differs significantly from the listed sizes — measure first and contact us if unsure
How to fit it safely
Fitting correctly matters for both barrier integrity and safe sleep. The protector must sit flat with no loose fabric on the sleep surface.
Step-by-step fitting
- Remove the cot mattress and any existing bedding.
- Unzip the protector fully and slide it over the mattress, ensuring all six sides are covered.
- Close the zipper completely — there should be no gap.
- Smooth the fabric flat with no loose, bunched, or excess fabric on the sleep surface.
- Place the cot mattress back in the cot.
- Fit a tight-fitting cot sheet over the top — snug with no loose fabric or wrinkles.
- Follow Red Nose Australia safe sleeping guidance: keep the cot bare with no pillows, blankets, soft toys, or padded items for infants under 12 months.
Choosing the right size
Standard Australian cot mattresses are 130×69cm (13cm deep). US-imported cot mattresses are typically 120×60cm (13cm deep). The knitted jersey has stretch to accommodate slight size variations. Measure your cot mattress before ordering — if it differs significantly from these sizes, contact us before purchasing.
Care
Wash before first use. Then every 3–6 months, or sooner after a spill or accident. Warm or gentle cycle — do not exceed 60°C. Skip bleach and fabric softeners to protect the TPU membrane.
Full care instructions
- Before first use: wash the protector before fitting, to remove any production residues (manufacturer-recommended).
- Wash: warm or gentle cycle. Do not exceed 60°C — high heat can damage the TPU membrane over time.
- Dry: tumble dry low/medium or air dry. Avoid hot dryers.
- Frequency: every 3–6 months when a fitted cot sheet sits over the top. Wash sooner after any spill, leak, or illness.
- Lifespan: over 4–5 years, prolonged exposure to body fluids can cause the TPU membrane to break down. Using a fitted cot sheet on top significantly extends the lifespan.
- Avoid: bleach, fabric softeners, dry cleaning, ironing, and any oils or strong detergents.
Dust mite cot mattress protector FAQs
Will it fit my cot mattress?
Measure your cot mattress before ordering. Standard Australian cot mattresses are 130×69cm; US-imported cots are typically 120×60cm. The knitted jersey stretches to accommodate slight variations. Contact us if your mattress differs significantly from these sizes.
Is this safe for infants?
The protector fits over the cot mattress under a tight-fitting cot sheet — it is not loose bedding. Always follow Red Nose Australia’s safe sleeping guidance. The sheet must fit snugly with no loose fabric on the sleep surface.
Is this an alternative to following Red Nose Australia safe sleep guidelines?
No — it fits within those guidelines, not around them. Red Nose Australia’s bare-cot recommendation (no loose blankets, pillows, soft toys, or padded items for infants under 12 months) still applies fully. The protector sits under your child’s fitted sheet, not loose inside the cot.
What’s the difference between this and the cotton cot protector?
Both can be used as a barrier against dust mite particles. This waterproof version has a TPU lining that also blocks liquid spills, drool, and accidents — better for younger infants or during toilet training. The cotton cot protector is 100% natural cotton, OEKO-TEX certified, and more breathable, but is not waterproof.
Should I discuss this with my GP or paediatrician first?
If your child has a diagnosed allergy, eczema, asthma, or any other medical condition, yes — your GP, paediatrician, or allergist is the right person to advise on whether barrier bedding suits your child’s situation. We describe what the fabric measurably does; we don’t make claims about medical conditions.
Does it feel like plastic? Will it make my child hot?
The TPU membrane is laminated behind a soft polyester knitted jersey outer, so the surface feels like fabric — no plastic crinkle. The TPU membrane is microporous, which means it allows water vapour through, so it breathes more than a solid PVC or vinyl sheet. It is not as breathable as the cotton version.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Dust mite cot mattress protector — waterproof, zippered
A waterproof cot mattress encasement that seals your cot mattress on all six sides, keeping dust mite allergens trapped inside and blocking spills, drool, and accidents.
Cot mattresses accumulate skin cells over time, making them a dust mite allergen reservoir in the nursery.
The microporous TPU membrane creates a barrier against the fine particles that carry those allergens (typically 10–40 microns), while also being waterproof. A fitted cot sheet goes over the top.
Safe sleep notice: This protector fits over the cot mattress, under your child’s fitted sheet — it is not loose bedding. Always follow Red Nose Australia’s safe sleeping guidance: place baby on their back, feet at the foot of the cot, and keep the cot bare of loose items for infants under 12 months. The sheet must fit snugly with no loose fabric on the sleep surface.
What makes a dust mite cot mattress protector (waterproof) effective
A microporous TPU membrane with pores measured at around 0.16 microns — far smaller than the 10–40 micron particles that carry dust mite allergens — laminated behind a soft, silent jersey outer, with a full zippered closure on all six sides.
- Dust mite allergen barrier — pores well below allergen-particle size, so dust mite waste stays sealed inside the cot mattress.
- Waterproof TPU lining — blocks spills, drool, and accidents; the cot mattress stays dry.
- Microporous and breathable — the membrane lets water vapour through, so it breathes rather than trapping heat like a solid PVC sheet.
- Enclosed binding seams — fabric edges sealed inside a bound seam, so the barrier stays continuous along every join.
- Full zippered closure — fully encloses all six sides of the cot mattress.
- Soft, silent, stretchy — the jersey outer feels like fabric, not plastic. No crinkle when your child moves.
The pore-size detail (third-party tested)
Dust mite allergens are carried by fecal pellets and body fragments that typically measure 10 to 40 microns. According to test data supplied by the manufacturer, Fifth Ridge Pty Ltd, this fabric’s TPU membrane has pores measured at approximately 0.16 microns at maximum distribution (third-party capillary flow porometry, Galwick fluid) — well below that range, which is why the fabric can be used as a particle barrier. The full zippered closure encloses all six sides of the cot mattress. We have not independently conducted this testing; the figures are reproduced in good faith from the manufacturer.
Materials & specifications
| Fabric outer | 90gsm polyester knitted jersey |
|---|---|
| Lining | 0.2mm microporous TPU (thermoplastic polyurethane) waterproof membrane |
| Pore size | Approximately 0.16 microns at maximum distribution (capillary flow porometry, Galwick fluid). Figures supplied by the manufacturer, Fifth Ridge Pty Ltd, from third-party testing. |
| Sizes | Standard AU — 130×69×13cm | Standard US — 120×60×13cm |
| Closure | Full zippered closure, encloses all six sides |
| Waterproof | Yes — TPU membrane blocks liquid spills and accidents |
| Warranty | 10-year product warranty (excludes misuse, improper washing, or damage) |
What the research says about mattress encasings
A 2003 randomised controlled trial published in the Journal of Allergy and Clinical Immunology (Halken et al.) tested mattress and pillow encasings against placebo encasings in children with asthma and dust mite allergy. The trial found that the active encasings produced a significant long-term reduction in dust mite allergen concentrations in mattresses over 12 months.
This is a finding of that independent study, reported here for general information. Individual results vary, and this product is intended to be used alongside other dust mite reduction measures.
Who this dust mite cot mattress protector is for
Best for parents wanting waterproof spill protection and a dust mite barrier on a standard AU or US cot mattress.
Commonly chosen by
- Anyone building a dust mite barrier across the home, including the nursery
- Parents who want waterproof accident protection and a dust mite barrier in one product
- Parents of infants transitioning to a bed who want waterproof and allergen protection
Probably not the right fit if
- You prefer 100% natural cotton — see our cotton cot mattress protector (OEKO-TEX certified, more breathable, not waterproof)
- Your cot mattress differs significantly from the listed sizes — measure first and contact us if unsure
How to fit it safely
Fitting correctly matters for both barrier integrity and safe sleep. The protector must sit flat with no loose fabric on the sleep surface.
Step-by-step fitting
- Remove the cot mattress and any existing bedding.
- Unzip the protector fully and slide it over the mattress, ensuring all six sides are covered.
- Close the zipper completely — there should be no gap.
- Smooth the fabric flat with no loose, bunched, or excess fabric on the sleep surface.
- Place the cot mattress back in the cot.
- Fit a tight-fitting cot sheet over the top — snug with no loose fabric or wrinkles.
- Follow Red Nose Australia safe sleeping guidance: keep the cot bare with no pillows, blankets, soft toys, or padded items for infants under 12 months.
Choosing the right size
Standard Australian cot mattresses are 130×69cm (13cm deep). US-imported cot mattresses are typically 120×60cm (13cm deep). The knitted jersey has stretch to accommodate slight size variations. Measure your cot mattress before ordering — if it differs significantly from these sizes, contact us before purchasing.
Care
Wash before first use. Then every 3–6 months, or sooner after a spill or accident. Warm or gentle cycle — do not exceed 60°C. Skip bleach and fabric softeners to protect the TPU membrane.
Full care instructions
- Before first use: wash the protector before fitting, to remove any production residues (manufacturer-recommended).
- Wash: warm or gentle cycle. Do not exceed 60°C — high heat can damage the TPU membrane over time.
- Dry: tumble dry low/medium or air dry. Avoid hot dryers.
- Frequency: every 3–6 months when a fitted cot sheet sits over the top. Wash sooner after any spill, leak, or illness.
- Lifespan: over 4–5 years, prolonged exposure to body fluids can cause the TPU membrane to break down. Using a fitted cot sheet on top significantly extends the lifespan.
- Avoid: bleach, fabric softeners, dry cleaning, ironing, and any oils or strong detergents.
Dust mite cot mattress protector FAQs
Will it fit my cot mattress?
Measure your cot mattress before ordering. Standard Australian cot mattresses are 130×69cm; US-imported cots are typically 120×60cm. The knitted jersey stretches to accommodate slight variations. Contact us if your mattress differs significantly from these sizes.
Is this safe for infants?
The protector fits over the cot mattress under a tight-fitting cot sheet — it is not loose bedding. Always follow Red Nose Australia’s safe sleeping guidance. The sheet must fit snugly with no loose fabric on the sleep surface.
Is this an alternative to following Red Nose Australia safe sleep guidelines?
No — it fits within those guidelines, not around them. Red Nose Australia’s bare-cot recommendation (no loose blankets, pillows, soft toys, or padded items for infants under 12 months) still applies fully. The protector sits under your child’s fitted sheet, not loose inside the cot.
What’s the difference between this and the cotton cot protector?
Both can be used as a barrier against dust mite particles. This waterproof version has a TPU lining that also blocks liquid spills, drool, and accidents — better for younger infants or during toilet training. The cotton cot protector is 100% natural cotton, OEKO-TEX certified, and more breathable, but is not waterproof.
Should I discuss this with my GP or paediatrician first?
If your child has a diagnosed allergy, eczema, asthma, or any other medical condition, yes — your GP, paediatrician, or allergist is the right person to advise on whether barrier bedding suits your child’s situation. We describe what the fabric measurably does; we don’t make claims about medical conditions.
Does it feel like plastic? Will it make my child hot?
The TPU membrane is laminated behind a soft polyester knitted jersey outer, so the surface feels like fabric — no plastic crinkle. The TPU membrane is microporous, which means it allows water vapour through, so it breathes more than a solid PVC or vinyl sheet. It is not as breathable as the cotton version.
