Waterproof Dust Mite Cushion Cover & Throw Pillow Protector | 50×50cm

A waterproof cushion cover and throw pillow protector for sofa cushions, scatter cushions, and decorative throw pillows — stretch-knit polyester jersey with a microporous TPU waterproof lining. The full-length zipper closure encloses the cushion insert on all sides, and the membrane's pore structure (approximately 0.16 microns at maximum distribution) means the fabric can be used as a barrier to dust mite particles in the 10–40 micron range as well as to liquids. Size: 50 × 50cm (square).

At a glance

• Fabric: 90gsm polyester knitted jersey outer with 0.2mm microporous TPU waterproof lining
• Pore size: Approximately 0.16 microns at maximum distribution (third-party capillary flow porometry, Galwick fluid)
• Surface: Soft and silent — no plastic crinkle
• Closure: Full-length zipper along one side
• Coverage: Encloses the cushion insert on all sides
• Size: 50 × 50cm (square) — fits standard scatter cushions and throw pillows
• Waterproof: Yes — the TPU membrane blocks liquids while remaining breathable
• Care: Machine washable on warm/gentle cycle
• Quality: Manufacturer-backed against defects

What this product is

A full cushion cover that can be used in homes where dust mite allergens are a concern. The TPU lining provides waterproof coverage for spills, food, and pet accidents on cushions on the couch, in the kids' play area, or anywhere food and drink come close; the membrane's pore structure and full enclosure mean the fabric can also be used as a barrier to dust mite particles.

• How the fabric works as a particle barrier. Sofa cushions and throw pillows are an often-overlooked dust mite reservoir — they accumulate skin cells (the food source for mites) over years and rarely get washed. Dust mite allergens are carried by fecal pellets and body fragments that typically measure 10 to 40 microns. The TPU membrane's pores — approximately 0.16 microns at maximum distribution — restrict these particles from passing through the fabric.
• Spill, food, and accident coverage. The TPU membrane is fully waterproof — useful for cushions in households with kids, pets, or anyone who eats and drinks on the sofa.
• Used alongside other dust mite reduction measures. Encasement covers are one piece of dust mite reduction, alongside regular vacuuming, hard-floor surfaces where possible, and reduced soft furnishings. If you have a diagnosed condition, discuss bedding and soft furnishing choices with your GP or allergist.

Who this is for

• People who want a waterproof layer on cushions and a fabric that can be used as a dust mite particle barrier
• Households with kids or pets where couch cushions face spills, accidents, food, or drool
• People who own quality decorative cushion covers they don't want to wash frequently — the inner protector takes the daily contact, spills, and sweat
• Carers and aged-care households needing cushion protection that handles spills as well as a dust mite barrier

It's probably not the right fit if:

• You prefer 100% natural fibres — see our cotton cushion cover instead (more breathable, but not waterproof)
• Your cushion is significantly larger or smaller than 50 × 50cm — measure first

What the fabric does

Dust mite allergens are carried by fecal pellets and body fragments that typically measure 10 to 40 microns. 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, which is why the fabric can be used as a particle barrier in this size range.

• Microporous TPU membrane. The membrane has pores small enough to block liquid water and fine particles, but large enough to let water vapour through. Particles stay inside the cushion.
• Fully waterproof. The TPU membrane blocks liquid spills, food, drinks, drool, and accidents.
• Full-length zipper. A zipper running along one side seals the cushion inside.
• Stretch fit. The knitted jersey outer has elasticity, so it accommodates standard scatter cushions with a forgiving fit.
• Soft and silent. The jersey outer feels like fabric, not plastic. No crinkle, no rustle. Sits invisibly under your decorative cushion cover.

Sizing

Cushion: 50 × 50cm (square) — fits standard scatter cushions, throw pillows, and decorative cushions sold across most Australian homewares retailers. The knitted jersey has stretch to accommodate slightly varied insert sizes.

Care

• Wash: Machine wash on a warm or gentle cycle. Avoid hot water — high temperatures can damage the TPU membrane.
• Dry: Tumble dry on low/medium heat or air dry. Avoid hot dryers.
• Frequency: Every 3–6 months is generally sufficient when a decorative cushion cover sits over the top. If there's been a spill, wash sooner.
• Avoid: Bleach, fabric softeners, dry cleaning, ironing, oils, and strong detergents.
• Lifespan: Over 4–5 years, prolonged exposure to body oils can cause the TPU membrane to break down. A decorative cover on top significantly extends the lifespan.

Materials and testing

• Fabric: 90gsm polyester knitted jersey outer with 0.2mm TPU (thermoplastic polyurethane) waterproof lining.
• Pore size: approximately 0.16 microns at maximum distribution (third-party capillary flow porometry, Galwick fluid).

We don't make claims that the product cures, treats, or prevents allergies, asthma, or any medical condition. What we describe is the fabric's measurable physical properties as a barrier against fine particles and liquids.

Pairs well with

• Cotton cushion cover — for cushions where breathability matters more than spill protection
• Dust mite mattress protectors — covers the mattress in the bedroom
• Dust mite pillow protectors — for the pillows on the bed

Frequently asked questions

Will it fit my cushion?

Standard scatter cushions and throw pillows are typically 50 × 50cm or 45 × 45cm. This cover is sized for 50 × 50cm. The knitted jersey has stretch, so a 45cm insert will fit snugly inside this cover.

What's the difference between this and the cotton cushion cover?

Both can be used as a barrier against dust mite particles. The cotton version is 100% natural cotton, OEKO-TEX certified, more breathable, but not waterproof. This version is a polyester knitted jersey with a TPU waterproof lining — it blocks liquid spills as well as particles. Choose this one if waterproof matters; choose cotton if natural fibres matter more.

Does this go on top of my decorative cushion cover or underneath?

Underneath. Slip this cover directly over your bare cushion insert, zip it closed, then put your decorative cushion cover on top. The protector is the invisible inner waterproof layer.

Is it suitable for kids' play cushions or pet beds?

Yes — the TPU lining is fully waterproof against spills, drool, and accidents. The fabric outer feels like a regular cushion cover (no plastic crinkle).

How often should I wash it?

Every 3–6 months is generally sufficient when a decorative cover sits over the top. Wash sooner if there's been a spill.

Is it noisy?

No. Plastic-backed protectors crinkle when you sit on them; this has a fabric outer and is silent.