Mattress Protectors
Cool Sleep: Best Waterproof Mattress Protectors
7 picks compared
6 min read
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The short answerFor cool, waterproof protection, the Slumber Cloud UltraCool, the SafeRest Premium, and the PlushBeds 100% GOTS Organic Cotton are top choices. Each uses breathable materials to reduce heat buildup while blocking spills.
?How we pickedWe compare published specifications, safety certifications and thousands of verified owner reviews, and we do not physically test every unit. Read the full process in our review methodology.
Slumber Cloud UltraCool Mattress Protector
★★★★★ 4.5 / 5 Best overall for hot sleepers
Uses Outlast technology that absorbs and releases heat to keep you cool. The cotton terry surface is soft and breathable. It is fully waterproof with a polyurethane membrane.
Material Cotton terry with OutlastWaterproof layer PolyurethaneFit Up to 18 inchesCare Machine washable
- Active temperature regulation
- Soft, breathable cotton surface
- No crinkle noise
- Higher price point
- May not fit very deep mattresses
Best for: Best overall for hot sleepers
SafeRest Premium Cotton Terry Mattress Protector
★★★★★ 4.6 / 5 Best value for cool comfort
A cotton terry surface absorbs moisture and feels cool to the touch. The waterproof membrane is noiseless and breathable. It is a budget-friendly option that does not sleep hot.
Material Cotton terry surfaceWaterproof layer PolyurethaneFit Up to 18 inchesCare Machine washable
- Affordable and effective
- Breathable and noiseless
- Soft cotton surface
- No active cooling tech
- May retain some heat for very hot sleepers
Best for: Best value for cool comfort
PlushBeds 100% GOTS Organic Cotton Mattress Protector
★★★★★ 4.7 / 5 Best for eco-conscious hot sleepers
Made from certified organic cotton, this protector is naturally breathable and chemical-free. The thin waterproof layer adds protection without bulk. It fits snugly and stays in place.
Material 100% GOTS organic cottonWaterproof layer PolyurethaneFit Up to 18 inchesCertification GOTS
- Organic and chemical-free
- Breathable cotton
- Eco-friendly production
- Premium price
- Less stretchy than some alternatives
Best for: Best for eco-conscious hot sleepers
Sleep Defense System Waterproof Mattress Protector
★★★★★ 4.5 / 5 Best for allergy sufferers
This protector has a polyester knit surface that is soft and breathable. It is hypoallergenic and blocks dust mites, mold, and bacteria. The waterproof layer is noiseless and comfortable.
Material Polyester knitWaterproof layer PolyurethaneFit Up to 18 inchesCare Machine washable
- Hypoallergenic protection
- Breathable knit surface
- Noiseless waterproofing
- May not be as cool as cotton
- Slightly thinner padding
Best for: Best for allergy sufferers
SureGuard Mattress Protector
★★★★★ 4.7 / 5 Best for heavy waterproofing
SureGuard offers a 100% waterproof membrane that is hospital-grade. The cotton terry surface is soft and breathable. It is ideal for bedwetting or heavy spills.
Material Cotton terryWaterproof layer PolyurethaneFit Up to 18 inchesCertification GREENGUARD Gold
- Excellent waterproofing
- Breathable cotton
- GREENGUARD Gold certified
- Bulkier than some protectors
- May have a slight chemical smell initially
Best for: Best for heavy waterproofing
Linenspa Premium Smooth Fabric Mattress Protector
★★★★★ 4.4 / 5 Best budget pick
This protector uses a smooth polyester fabric that is quiet and breathable. It is very affordable and still provides full waterproof protection. The elastic skirt fits mattresses up to 18 inches.
Material PolyesterWaterproof layer PolyurethaneFit Up to 18 inchesCare Machine washable
- Very affordable
- Quiet and smooth
- Easy to clean
- Less breathable than cotton
- May not be as cool for hot sleepers
Best for: Best budget pick
Casper Waterproof Mattress Protector
★★★★★ 4.6 / 5 Best for a snug fit
Casper's protector has a stretchy knit fabric that conforms to your mattress. It is breathable and waterproof, with a soft, noiseless design. The elastic band keeps it secure.
Material Polyester knitWaterproof layer PolyurethaneFit Up to 15 inchesCare Machine washable
- Excellent stretch and fit
- Soft and breathable
- Noiseless
- May not fit deep mattresses
- Thinner padding
Best for: Best for a snug fit
What to Look For
Focus on the material. Cotton terry and polyester knit are breathable and feel cool. Avoid vinyl or plastic-backed protectors that trap heat. Check the waterproof layer: polyurethane is thin and noiseless. Look for a snug fit with deep pockets to prevent shifting.
How We Chose
We compared specifications like material, waterproofing, and fit. We also read owner feedback about heat retention and comfort. Products with cooling features or breathable fabrics ranked higher. We prioritized real-world performance over marketing claims.
Cooling Technologies
Some protectors use phase-change materials like Outlast to regulate temperature. Others rely on natural breathability of cotton or bamboo. For very hot sleepers, consider a protector with active cooling. But even simple cotton terry can be cooler than synthetic options.
Fit and Care
Measure your mattress depth before buying. Most protectors fit up to 18 inches, but some are shallower. Machine washable protectors are easier to maintain. Tumble dry low to preserve the waterproof layer.
Questions people ask
How does a waterproof mattress protector keep you cool?
Breathable materials like cotton and polyester knit allow air to flow. The waterproof membrane is thin and noiseless, so it does not trap heat. Some use cooling technologies like Outlast to absorb and release heat.
What is the best material for a cool waterproof protector?
Cotton terry is breathable and soft. Polyester knit is also cool and stretchy. Avoid vinyl or plastic-backed protectors because they retain heat.
Can a waterproof protector cause night sweats?
Some can, if they are made of non-breathable materials. Choose one with a breathable membrane and cotton or bamboo surface to minimize heat buildup.
Is a waterproof mattress protector worth it?
Yes, it protects your mattress from spills, stains, and allergens. A good one adds comfort without making you hot. It extends mattress life and is easy to clean.
How often should you wash a waterproof mattress protector?
Wash it every 1-2 months, or more often if you sweat or spill. Use mild detergent and avoid fabric softeners, which can damage the waterproof layer.
Do waterproof protectors make noise?
Modern protectors use thin polyurethane membranes that are noiseless. Vinyl or plastic protectors crinkle. Check for 'noiseless' in the description.
Can I use a waterproof protector with a heated blanket?
Yes, but check the protector's care instructions. Some may not be suitable for high heat. Use a low setting to avoid damaging the waterproof layer.
What is the difference between a mattress protector and a mattress pad?
A protector is waterproof and thin, while a pad adds cushioning. For cooling, a protector is better because it does not add bulk. Some pads are also waterproof but may be warmer.
The bottom lineSo which one?
For most hot sleepers, the Slumber Cloud UltraCool offers the best balance of cooling and protection. If you want a budget-friendly option, the SafeRest Premium is a solid choice. Always prioritize breathable materials over price.
