The Ultra-Cool Waterproof Mattress Protector by Coop Sleep Goods is a waterproof mattress protector built for sleepers who want moisture protection without heat. Its top layer is a lab-tested active cooling jacquard fabric (a polyethylene and polyester blend) that disperses more heat than bamboo, silk, or other synthetics—even through a fitted sheet—while a silent, flexible polyurethane backing shields the mattress from spills and accidents without crinkling or noise. It is OEKO-TEX® STANDARD 100 certified, machine washable, and HSA/FSA eligible. It costs $69.00 and comes in six sizes—Twin, Twin XL, Full, Queen, King, and Cal King—fitting mattresses up to 15" deep. Coop backs it with a 100-Night Sleep Better Guarantee.
Best for
- Hot sleepers who want waterproof protection that doesn't trap heat or make them sweat
- Protecting a mattress from spills and occasional accidents without a plasticky feel or sound
- Shoppers with mattresses up to 15" deep, in any standard size from Twin to Cal King
- Wellness-minded buyers who want certified materials (OEKO-TEX® STANDARD 100) and HSA/FSA eligibility
Not ideal for: shoppers who mainly want everyday protection with a softer, classic feel—the page suggests the Ultra-Tech Mattress Protector, with its Lulltra™ bamboo-derived fabric, is a great fit for that instead.
How it compares
Both the Ultra-Cool and the Ultra-Tech Mattress Protectors have a soft, quiet waterproof backing and come in every size from Twin to Cal King. The difference is the top fabric: the Ultra-Cool uses Coop's breeziest polyethylene and polyester blend in a cooling jacquard weave, designed for hot sleepers who want a cooler feel even through a fitted sheet, while the Ultra-Tech uses breathable Lulltra™ bamboo-derived fabric for everyday protection with a softer, classic feel. If you tend to sleep hot, choose the Ultra-Cool; if you mainly want reliable spill protection, the Ultra-Tech is a great fit.
Frequently asked questions
- Is my Ultra-Cool Waterproof Mattress Protector waterproof? It features a flexible, breathable polyurethane backing designed to help block moisture from spills and occasional accidents without the plastic-like feel or sound of traditional protectors. The moisture barrier is soft and comfortable, but it isn't 100% fail-proof—clean up liquids promptly and follow the care instructions, since liquid volume, exposure time, extended use, and product care can all affect effectiveness.
- What's the difference between the Ultra-Cool and Ultra-Tech Mattress Protectors? Both have a soft, quiet waterproof backing and come in every size from Twin to Cal King. The Ultra-Cool uses a polyethylene and polyester cooling jacquard weave for hot sleepers; the Ultra-Tech uses breathable Lulltra™ bamboo-derived fabric for a softer, classic feel.
- Will a mattress protector make my bed hotter? Many waterproof protectors trap heat because of their plastic-like backing, but the Ultra-Cool is designed to do the opposite. Its cooling jacquard weave was lab-tested to disperse more heat than bamboo, silk, or other synthetics, so heat doesn't build up against your mattress.
- What materials are used in the Ultra-Cool Waterproof Mattress Protector? A polyethylene and polyester blend in a cooling jacquard weave, a PU waterproof backing, and a polyester jersey knit skirt.
- How do I care for the Ultra-Cool Waterproof Mattress Protector? Machine wash separately in cold water on a gentle cycle with mild detergent; do not use bleach or fabric softener. Tumble dry low—high heat can damage the waterproof membrane—and do not iron or dry clean.
- Is the Ultra-Cool Waterproof Mattress Protector certified? Yes, it is OEKO-TEX® STANDARD 100 certified, which certifies that the product is safe from harmful substances, ethically made, environmentally friendly, and fully traceable.
- What sizes are available? Six sizes: Twin (39 in x 75 in x 15 in), Twin XL (39 in x 80 in x 15 in), Full (54 in x 75 in x 15 in), Queen (60 in x 80 in x 15 in), King (78 in x 80 in x 15 in), and Cal King (72 in x 84 in x 15 in).
- Does Coop offer a guarantee on the Ultra-Cool Waterproof Mattress Protector? Yes, Coop offers a 100-Night Sleep Better Guarantee, allowing you to try it risk-free at home.
- What do reviews say about the Ultra-Cool Waterproof Mattress Protector? Customer reviews average 3.0 out of 5 stars across 13 reviews, with mixed feedback—23% gave 5 stars, 23% gave 3 stars, and 23% gave 1 star—so it's worth reading the reviews to see if it matches your needs.
What customers say
Rated 3.0 out of 5 stars based on 13 reviews. Feedback is mixed: 23% of reviewers gave 5 stars, 15% gave 4 stars, 23% gave 3 stars, 15% gave 2 stars, and 23% gave 1 star.
Pairs well with
Order the Ultra-Cool Waterproof Mattress Protector today and try it at home with Coop's 100-Night Sleep Better Guarantee—free shipping on orders over $75.