Best Waterproof Mattress Cover King of 2026
Best waterproof mattress cover king picks help guard against spills, perspiration, and accidents. Compare quiet fabrics, pocket depth, and care for November 2026.
By Brad Nehring
Updated November 6, 2026
Protect your mattress without adding noise or bulk
A liquid spill can soak through sheets before you have time to react, and a crinkly cover can turn every small movement into a distraction. The best waterproof mattress cover king should protect the mattress while keeping its surface quiet, comfortable, and secure under your bedding. These five options focus on waterproof barriers, soft top fabrics, and practical fit details rather than adding the pressure relief or cushioning of a true foam mattress topper.
After carefully analyzing the listed product specifications, the main differences are fabric, pocket depth, and coverage style. PlushDeluxe highlights bamboo-derived fabric and a fit for mattresses up to 18 inches deep, while two BEDLORE choices use quilted tops and deep elastic skirts. Utopia Bedding takes a different approach with a zippered encasement, though its stated depth limit is 15 inches. These covers are designed to protect, not correct a sagging bed or change its firmness. If a protector shifts at night, this guide to keeping a sleep surface from sliding covers related fit concerns.
| Award | Product | AMG Score About AMG ScoreThe AMG Score is our own rating from 0 to 10, based on performance, design and build, ease of use, and value. It reflects independent research and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Overall |
PlushDeluxe King Bamboo Mattress Protector
|
9.1/10 | Buy |
| Best Budget |
BEDLORE Waterproof King Mattress Protector
|
8.6/10 | Buy |
| Best Value |
SafeRest Waterproof King Mattress Protector
|
8.3/10 | Buy |
| Best Premium |
Utopia Bedding King Zippered Mattress Protector
|
8.1/10 | Buy |
BEDLORE Waterproof King Mattress Protector
|
7.8/10 | Buy |
PlushDeluxe King Bamboo Mattress Protector
Built with breathable bamboo viscose and a noiseless waterproof barrier, this King cover shields against spills and bodily fluids without trapping heat. Its deep-pocket skirt accommodates mattresses up to 18 inches, making it a practical safeguard for families and pet owners.
Pros
- Breathable bamboo surface stays cool and soft
- Reliable waterproof barrier against liquids and stains
- Quiet design without disruptive crinkling sounds
- Accommodates mattresses up to 18 inches deep
Cons
- Will not fit mattresses exceeding 18 inches depth
- Available exclusively in a white finish
BEDLORE Waterproof King Mattress Protector
Built with a classic quilted top and a TPU barrier, this King protector shields mattresses up to 18 inches deep from liquid accidents. The quiet, breathable fabric delivers dependable nighttime spill defense without disruptive rustling.
Pros
- Reliable 100% waterproof TPU barrier
- Accommodates thick mattresses up to 18 inches deep
- Quilted fabric stays soft and quiet during movement
- Convenient machine washable construction
Cons
- Requires low-heat drying to protect the waterproof layer
- Gray color may show through light-colored fitted sheets
SafeRest Waterproof King Mattress Protector
Designed to shield King beds from spills and perspiration, this SafeRest protector combines waterproof defense with a quiet, breathable surface. It provides practical, low-maintenance protection for homeowners and rental property hosts.
Pros
- Reliable barrier against liquids and perspiration
- Quiet fabric prevents crinkling noises during sleep
- Breathable surface supports comfortable airflow
- Safe for cold machine washing and tumble drying
Cons
- Requires cold-water cycle for laundering
- Only offered in Pure White
Utopia Bedding King Zippered Mattress Protector
The Utopia Bedding King Size Zippered Mattress Protector provides full 360-degree waterproof encasement for standard 78 by 80-inch king beds with profile depths up to 15 inches. Crafted from soft, non-crinkling knitted polyester with a dependable liquid barrier, it protects against spills and sweat without altering your mattress firmness or contouring.
Pros
- Reliable 360-degree six-sided liquid barrier protects mattresses against spills, perspiration, and pet accidents.
- Soft knitted polyester construction avoids the noisy, crinkly plastic sound common in basic vinyl covers.
- Stretchable fabric and wrap-around zipper keep the protector snug on mattresses up to 15 inches deep.
- Maintains your mattress's original ergonomic feel without altering firmness or contouring support.
Cons
- Maximum depth capacity caps at 15 inches, making it unsuitable for extra-thick luxury pillow-tops exceeding that height.
- Requires lifting the mattress to slip the encasement underneath and zip it, which can be challenging for a solo individual.
- Tumble drying requires strict low-heat settings to avoid potential damage to the waterproof backing layer.
BEDLORE Waterproof King Mattress Protector
The BEDLORE Waterproof King Size Mattress Protector features a coin-quilted microfiber top and an upgraded TPU barrier built to fit King mattresses up to 18 inches deep. It shields against spills, fluids, and perspiration without crinkly plastic noise, making it a reliable protective layer for busy households and guest rooms.
Pros
- Reliable 100% waterproof TPU barrier protects mattress investments against liquids, body fluids, and everyday spills
- Deep-pocket skirt with 360-degree elastic secures mattresses up to 18 inches thick without shifting or bunching
- OEKO-TEX Standard 100 certification verifies that materials are reviewed for harmful substances
- Soft microfiber coin-quilted surface minimizes plastic rustling sounds during nighttime movement
- Machine washable and low-heat dryer compatible for straightforward home cleaning
Cons
- Strict low-heat drying threshold (under 130°F / 55°C) is required to prevent thermal damage to the waterproof TPU backing
- Vacuum-packed delivery arrives compressed and requires gentle patting or airing out before achieving full loft
- Fitted-sheet design leaves the bottom underside of the mattress uncovered rather than providing full six-sided zippered encasement
FAQs
Will a waterproof king mattress cover make my bed more comfortable?
No, a protector mainly shields the mattress from liquids and stains rather than adding meaningful cushioning. Soft or quilted surfaces may feel smoother beneath a fitted sheet, but they won’t provide the pressure relief of a foam or latex topper.
How deep should a king mattress protector fit?
Choose a pocket depth that meets or exceeds your mattress height. PlushDeluxe and both BEDLORE protectors list a fit up to 18 inches, while the Utopia Bedding zippered encasement fits mattresses up to 15 inches deep. Measure your mattress before ordering so the cover can sit securely.
Are waterproof mattress protectors noisy?
The listed products describe quiet or noiseless materials, including PlushDeluxe’s silent design and BEDLORE’s noiseless fabric. A waterproof barrier can vary by construction, so check product details and care guidance if sound sensitivity is a concern.
Can a mattress protector stop a sagging mattress from causing back discomfort?
No, a thin protector won’t repair sagging or provide the support change needed to correct a worn mattress. A topper may adjust surface feel, but severe sagging usually calls for evaluating the mattress itself. See this guide to mattress toppers for back support for a separate look at cushioning options.
Can I machine-wash these waterproof mattress covers?
Yes, the listed care instructions describe machine washing, but settings differ by product. SafeRest specifies cold washing, while BEDLORE recommends a gentle cold cycle and low-heat tumble drying. Follow the label and avoid bleach or ironing where the manufacturer advises against it.
Is a zippered encasement better than a fitted protector?
It depends on the coverage you want. Utopia Bedding’s zippered design encloses all sides of the mattress, while fitted styles with elastic skirts are easier to remove for routine washing. Check mattress depth and choose the format that suits your cleaning and protection needs.
About the author
Brad Nehring is an experienced sleep-product tester and writer who has spent nearly a decade evaluating mattresses and related sleep products. His expertise centers on product performance, comfort, construction and real-world usability, with an emphasis on helping shoppers understand meaningful differences before buying.