{"product_id":"waterproof-cot-mattress-protector-dust-mite-encasement","title":"Cot Mattress Protector | Waterproof | Zippered Encasement","description":"\u003csection class=\"dmas-block\" aria-label=\"Product details\"\u003e\u003c!-- INTRO --\u003e\n\u003cdiv class=\"dmas-hero\"\u003e\n\u003cdiv class=\"dmas-hero__intro\" id=\"dmas-what\"\u003e\n\u003ch2 class=\"dmas-h2\"\u003eDust mite cot mattress protector — waterproof, zippered\u003c\/h2\u003e\n\u003cp class=\"dmas-lead\"\u003eA 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.\u003c\/p\u003e\n\u003cp class=\"dmas-body\"\u003eCot mattresses accumulate skin cells over time, making them a dust mite allergen reservoir in the nursery.\u003c\/p\u003e\n\u003cp class=\"dmas-body\"\u003eThe 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.\u003c\/p\u003e\n\u003cdiv class=\"dmas-note\" style=\"background:#fff8e1;border-left:4px solid #f5a623;padding:.9rem 1rem;margin:1rem 0;border-radius:0 8px 8px 0;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eSafe sleep notice:\u003c\/strong\u003e This protector fits over the cot mattress, under your child’s fitted sheet — it is not loose bedding. Always follow \u003ca class=\"dmas-link\" href=\"https:\/\/rednose.org.au\/article\/safe-sleeping-recommendations\" rel=\"noopener\" target=\"_blank\"\u003eRed Nose Australia’s safe sleeping guidance\u003c\/a\u003e: 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.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-trust\"\u003e\n\u003cdiv class=\"dmas-trust__item\"\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e\u003cspan\u003eover $150\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-trust__item\"\u003e\n\u003cstrong\u003e12-month\u003c\/strong\u003e\u003cspan\u003ewarranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-trust__item\"\u003e\n\u003cstrong\u003e3rd party\u003c\/strong\u003e\u003cspan\u003epore-size tested\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-section\" id=\"dmas-barrier\"\u003e\n\u003ch2 class=\"dmas-h2\"\u003eWhat makes a dust mite cot mattress protector (waterproof) effective\u003c\/h2\u003e\n\u003cp class=\"dmas-lead\"\u003eA 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.\u003c\/p\u003e\n\u003cul class=\"dmas-list dmas-list--feature\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust mite allergen barrier\u003c\/strong\u003e — pores well below allergen-particle size, so dust mite waste stays sealed inside the cot mattress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof TPU lining\u003c\/strong\u003e — blocks spills, drool, and accidents; the cot mattress stays dry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroporous and breathable\u003c\/strong\u003e — the membrane lets water vapour through, so it breathes rather than trapping heat like a solid PVC sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosed binding seams\u003c\/strong\u003e — fabric edges sealed inside a bound seam, so the barrier stays continuous along every join.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull zippered closure\u003c\/strong\u003e — fully encloses all six sides of the cot mattress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft, silent, stretchy\u003c\/strong\u003e — the jersey outer feels like fabric, not plastic. No crinkle when your child moves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdetails class=\"dmas-acc\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eThe pore-size detail (third-party tested)\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eDust mite allergens are carried by fecal pellets and body fragments that typically measure 10 to 40 microns. According to a third-party test report, 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. Pore-size figures are from a third-party laboratory test report provided by our manufacturer; a copy is available on request.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eMaterials \u0026amp; specifications\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cdiv class=\"dmas-table-wrap\"\u003e\u003ctable class=\"dmas-table\"\u003e\n\u003ccaption class=\"dmas-visually-hidden\"\u003eMaterials and testing specifications\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFabric outer\u003c\/th\u003e\n\u003ctd\u003e90gsm polyester knitted jersey\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLining\u003c\/th\u003e\n\u003ctd\u003e0.2mm microporous TPU (thermoplastic polyurethane) waterproof membrane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePore size\u003c\/th\u003e\n\u003ctd\u003eApproximately 0.16 microns at maximum distribution (capillary flow porometry, Galwick fluid). From a third-party test report.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd\u003eAustralian standard cot: 130 × 69 × 13 cm | US size cot: 120 × 60 × 13 cm (about 10 cm shorter and 9 cm narrower)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eClosure\u003c\/th\u003e\n\u003ctd\u003eFull zippered closure, encloses all six sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWaterproof\u003c\/th\u003e\n\u003ctd\u003eYes — TPU membrane blocks liquid spills and accidents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e12-month voluntary warranty against manufacturing defects, in addition to your Australian Consumer Law rights (excludes misuse, improper washing, or damage). See our \u003ca href=\"\/policies\/refund-policy\"\u003eRefund Policy\u003c\/a\u003e for full terms.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-section\" id=\"dmas-who\"\u003e\n\u003ch2 class=\"dmas-h2\"\u003eWho this dust mite cot mattress protector is for\u003c\/h2\u003e\n\u003cp class=\"dmas-lead\"\u003eBest for parents wanting waterproof spill protection and a dust mite barrier on an Australian standard or US size cot mattress, in the size that matches yours.\u003c\/p\u003e\n\u003cp class=\"dmas-eyebrow\"\u003eCommonly chosen by\u003c\/p\u003e\n\u003cul class=\"dmas-list dmas-list--check\"\u003e\n\u003cli\u003eAnyone building a dust mite barrier across the home, including the nursery\u003c\/li\u003e\n\u003cli\u003eParents who want waterproof accident protection and a dust mite barrier in one product\u003c\/li\u003e\n\u003cli\u003eParents of infants transitioning to a bed who want waterproof and allergen protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"dmas-eyebrow\"\u003eProbably not the right fit if\u003c\/p\u003e\n\u003cul class=\"dmas-list dmas-list--cross\"\u003e\n\u003cli\u003eYou prefer 100% natural cotton — see our \u003ca class=\"dmas-link\" href=\"\/products\/100-cotton-cot-mattress-protector-dust-mite-encasement\"\u003ecotton cot mattress protector\u003c\/a\u003e (more breathable; not waterproof)\u003c\/li\u003e\n\u003cli\u003eYour cot mattress differs significantly from both listed sizes — measure first and \u003ca class=\"dmas-link\" href=\"https:\/\/www.dustmiteallergysolutions.com.au\/pages\/contact\"\u003econtact us\u003c\/a\u003e if unsure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-section\" id=\"dmas-fit\"\u003e\n\u003ch2 class=\"dmas-h2\"\u003eHow to fit it safely\u003c\/h2\u003e\n\u003cp class=\"dmas-lead\"\u003eFitting correctly matters for both barrier integrity and safe sleep. The protector must sit flat with no loose fabric on the sleep surface.\u003c\/p\u003e\n\u003cdetails class=\"dmas-acc\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eStep-by-step fitting\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003col class=\"dmas-steps\"\u003e\n\u003cli\u003eRemove the cot mattress and any existing bedding.\u003c\/li\u003e\n\u003cli\u003eUnzip the protector fully and slide it over the mattress, ensuring all six sides are covered.\u003c\/li\u003e\n\u003cli\u003eClose the zipper completely — there should be no gap.\u003c\/li\u003e\n\u003cli\u003eSmooth the fabric flat with no loose, bunched, or excess fabric on the sleep surface.\u003c\/li\u003e\n\u003cli\u003ePlace the cot mattress back in the cot.\u003c\/li\u003e\n\u003cli\u003eFit a tight-fitting cot sheet over the top — snug with no loose fabric or wrinkles.\u003c\/li\u003e\n\u003cli\u003eFollow Red Nose Australia safe sleeping guidance: keep the cot bare with no pillows, blankets, soft toys, or padded items for infants under 12 months.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eChoosing the right size\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eMeasure your cot mattress before ordering. Most cots sold in Australia take a 130 × 69 cm mattress, so choose the Australian standard size. Choose the US size only if your mattress is about 120 × 60 cm, as sold with some imported cots. The US size is smaller and will not fit an Australian standard cot mattress properly. The knitted jersey stretches slightly, but it is not designed to cover a mattress of a different size. Not sure? \u003ca class=\"dmas-link\" href=\"https:\/\/www.dustmiteallergysolutions.com.au\/pages\/contact\"\u003eContact us\u003c\/a\u003e before ordering.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-section\" id=\"dmas-care\"\u003e\n\u003ch2 class=\"dmas-h2\"\u003eCare\u003c\/h2\u003e\n\u003cp class=\"dmas-lead\"\u003eWash before first use. \u003ca href=\"https:\/\/www.allergy.org.au\/patients\/allergy-treatments\/allergen-minimisation\" target=\"_blank\" rel=\"noopener\"\u003eASCIA recommends\u003c\/a\u003e washing dust mite covers at least every two months; wash straight away after a spill or accident. Warm or gentle cycle — do not exceed 60°C. Skip bleach and fabric softeners to protect the TPU membrane.\u003c\/p\u003e\n\u003cdetails class=\"dmas-acc\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eFull care instructions\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cul class=\"dmas-list dmas-list--plain\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBefore first use:\u003c\/strong\u003e wash the protector before fitting, to remove any production residues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWash:\u003c\/strong\u003e warm or gentle cycle. Do not exceed 60°C — high heat can damage the TPU membrane over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry:\u003c\/strong\u003e tumble dry low\/medium or air dry. Avoid hot dryers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e at least every two months (ASCIA's recommendation), with the fitted cot sheet on top washed regularly. Wash straight away after any spill, leak, or illness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid:\u003c\/strong\u003e bleach, fabric softeners, dry cleaning, ironing, and any oils or strong detergents.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dmas-section\" id=\"dmas-faq\"\u003e\n\u003ch2 class=\"dmas-h2\"\u003eDust mite cot mattress protector FAQs\u003c\/h2\u003e\n\u003cdetails class=\"dmas-acc dmas-acc--faq\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eWill it fit my cot mattress?\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eMeasure your cot mattress before ordering. Most cots sold in Australia take a 130 × 69 cm mattress, so choose the Australian standard size. Choose the US size only if your mattress is about 120 × 60 cm, as sold with some imported cots. The US size is smaller and will not fit an Australian standard cot mattress properly. The knitted jersey stretches slightly, but it is not designed to cover a mattress of a different size. Not sure? \u003ca class=\"dmas-link\" href=\"https:\/\/www.dustmiteallergysolutions.com.au\/pages\/contact\"\u003eContact us\u003c\/a\u003e before ordering.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc dmas-acc--faq\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eIs this safe for infants?\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eThe protector fits over the cot mattress under a tight-fitting cot sheet — it is not loose bedding. Always follow \u003ca class=\"dmas-link\" href=\"https:\/\/rednose.org.au\/article\/safe-sleeping-recommendations\" rel=\"noopener\" target=\"_blank\"\u003eRed Nose Australia’s safe sleeping guidance\u003c\/a\u003e. The sheet must fit snugly with no loose fabric on the sleep surface.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc dmas-acc--faq\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eIs this an alternative to following Red Nose Australia safe sleep guidelines?\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eNo — 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.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc dmas-acc--faq\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eWhat’s the difference between this and the cotton cot protector?\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eBoth 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 \u003ca class=\"dmas-link\" href=\"\/products\/100-cotton-cot-mattress-protector-dust-mite-encasement\"\u003ecotton cot protector\u003c\/a\u003e is 100% natural cotton and more breathable, but is not waterproof.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc dmas-acc--faq\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eShould I discuss this with my GP or paediatrician first?\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eIf 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.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"dmas-acc dmas-acc--faq\"\u003e\u003csummary\u003e\u003cspan class=\"dmas-summary-head\"\u003eDoes it feel like plastic? Will it make my child hot?\u003c\/span\u003e\u003cspan class=\"dmas-chev\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"dmas-acc__body\"\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e.dmas-block{--dmas-ink:#272635;--dmas-ink-soft:#56555f;--dmas-line:#dcdce4;--dmas-muted:#a6a6a8;--dmas-paper:#ffffff;--dmas-mist:#e8e9f3;--dmas-blue:#b1e5f2;--dmas-blue-soft:#d4f0f8;--dmas-blue-deep:#7fcfe0;--dmas-link:#272635;--dmas-radius:14px;max-width:760px;margin:0 auto;color:var(--dmas-ink);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;}.dmas-block *{box-sizing:border-box;}.dmas-lead,.dmas-body,.dmas-list li,.dmas-acc summary,.dmas-acc__body,.dmas-acc__body p,.dmas-steps li,.dmas-table,.dmas-table th,.dmas-table td,.dmas-trust__item span,.dmas-eyebrow,.dmas-note,.dmas-h3,.dmas-trust__item strong{font-size:16px;}.dmas-hero{background:#fff;padding:0 0 .5rem;margin:0 0 1.25rem;}.dmas-hero__intro{margin-top:0;}.dmas-hero__intro .dmas-h2{margin-bottom:.5rem;}.dmas-hero__intro .dmas-body{color:var(--dmas-ink-soft);margin-bottom:0;}.dmas-hero .dmas-trust{margin-top:1.25rem;}.dmas-trust{display:flex;flex-wrap:wrap;gap:.6rem;margin:0;}.dmas-trust__item{flex:1 1 30%;min-width:120px;display:flex;flex-direction:column;align-items:center;text-align:center;padding:.85rem .6rem;border-radius:10px;background:var(--dmas-blue-soft);border:1px solid var(--dmas-line);}.dmas-trust__item strong{color:var(--dmas-ink);letter-spacing:-.01em;font-weight:700;}.dmas-trust__item span{color:var(--dmas-ink-soft);margin-top:.1rem;}.dmas-link{color:var(--dmas-link);font-weight:600;text-decoration:none;box-shadow:inset 0 -2px 0 var(--dmas-blue-deep);transition:box-shadow .15s ease;}.dmas-link:hover,.dmas-link:focus-visible{box-shadow:inset 0 -1.1em 0 var(--dmas-blue);}.dmas-section{position:relative;padding:1.6rem 0;margin:0;border-top:1px solid 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