Total protection for your king mattress against allergens, bed bugs, and spills. If you’ve ever woken up with a stuffy nose or found mysterious bites on your skin, you know the struggle. A king mattress encasement is your secret weapon against all that. It wraps your entire mattress like a shield, keeping dust mites, pet dander, and creepy crawlies trapped outside. No more worrying about accidental coffee spills or late-night snack crumbs ruining your sleep sanctuary.
You deserve a bed that feels clean every single night. This waterproof barrier does’nt just protect your investment—it gives you peace of mind. No more stripping sheets at 3 AM after a spill or panicking about bed bugs. Just zip it on and forget about it. Your mattress stays fresh, your allergies stay calm, and you sleep soundly. Simple, right? That’s the beauty of total coverage without the hassle.
Product Comparison Table: 9 Best King Mattress Encasement
| Image | Why We Like This Product | Editor’s Rating | |
 |
Utopia Bedding King Size Mattress Protector Zippered, 100% Waterproof…
|
9.9 |
Read Review |
 |
Utopia Bedding Mattress Protector Zippered California King Size, 100%…
|
9.7 |
Read Review |
 |
Utopia Bedding Zippered Mattress Encasement Full – 100% Waterproof…
|
9.5 |
Read Review |
 |
Utopia Bedding Premium Waterproof Bed Bug Mattress Cover, King…
|
9.3 |
Read Review |
 |
Utopia Bedding Premium Waterproof Bed Bug Mattress Cover, King…
|
9.1 |
Read Review |
 |
HOSPITOLOGY PRODUCTS Mattress Encasement – Zippered Bed Bug Dust…
|
8.9 |
Read Review |
 |
Guardmax King Mattress Encasement with Zipper, Waterproof, Bed Bug…
|
8.7 |
Read Review |
 |
Moonsea King Mattress Protector Zippered,Ultra Soft Terry Surface Mattress…
|
8.5 |
Read Review |
 |
King (13-16 in. Deep) SureGuard Mattress Encasement – 100%…
|
8.3 |
Read Review |
Quick Review For Top 9 King Mattress Encasement
Utopia Bedding King Size Mattress Protector Zippered, 100% Waterproof Bed Bug and Dust Mite Proof Mattress Encasement, Absorbent 6 Sided Mattress Cover
The Utopia Bedding King Size Mattress Protector Zippered is a 100% waterproof, bed bug and dust mite proof mattress encasement that gives you complete peace of mind. This isn’t just a simple topper. It is a full 360-degree cover that wraps around your entire matress, protecting it from every angle.
You get a true barrier against spills, sweat, and accidents. The waterproof liquid layer blocks drinks, pet messes, or kids’ nighttime mishaps from ever reaching your mattress core.
No more worrying about hidden stains or odors.
This protector fits king size mattresses that are 78 inches by 80 inches, and it works with matresses up to 15 inches deep. The fabric stretches easily, so you can slip it on without a fight. Once it is on, it stays put. There is no annoying shifting or bunching up during the night. The non-crinkling design is a big plus. It stays quiet and soft, not stiff or noisy.
Made from smooth, knitted polyester, it lays flat against your matress so you barely notice it is there.
The secure zippered closure wraps all the way around to keep the cover tight. This full encasement is key for blocking bed bugs and dust mites. They can’t get in or out, which makes your sleeping enviroment much cleaner and healthier. If you have allergies, this is a practical solution that works hard for you every night.
Keeping it clean is simple.
Utopia Bedding Mattress Protector Zippered California King Size, 100% Waterproof Bed Bug and Dust Mite Proof Mattress Encasement, Absorbent 6 Sided Mattress Cover
The Utopia Bedding Mattress Protector Zippered California King Size is a full coverage encasement designed to keep your mattress safe from spills, bugs, and dust. It fits a california king mattress measuring 72 inches by 84 inches, and works with mattresses up to 15 inches deep. The 360 degree coverage means it wraps around all six sides of your mattress, so nothing gets through. The fabric is stretchy and slips on without a fight, and it stays put.
No shifting or bunching up during the night. If you need help, there is an installation video to guide you step by step.
The fabric itself is soft and durable. It is made from a smooth knitted polyester that lays flat and quiet. There is no crinkling or stiff feeling, so you wont even notice it under your sheets. The material breaths well, which helps keep the surface comfortable for sleeping. A secure zippered closure wraps around the entire mattress, pulling everything tight.
This design keeps the cover in place and stops bed bugs or dust mites from getting in or out. It is a solid barrier for your california king mattress.
Liquid protection is a key feature here. The 100% waterproof layer blocks spills, sweat, drinks, and everyday accidents from reaching the mattress. This is really handy if you have kids or pets who might make a mess. The layer works without making the cover feel plasticy or hot. It is absorbant on top, so liquids dont just pool up.
Utopia Bedding Zippered Mattress Encasement Full – 100% Waterproof and Bed Bug Proof Mattress Protector – Absorbent, Six-Sided Mattress Cover
The Utopia Bedding Zippered Mattress Encasement Full is a 100% waterproof and bed bug proof mattress protector that gives you total coverage. This is not just a simple pad. It is a six-sided cover that wraps your entire mattress for complete protection.
This encasement fits a full size mattress that is 54 inches by 75 inches. It works for mattresses up to 13 inches deep. The fabric has a bit of stretch, so it slips on easily. Once it is on, it stays in place without sliding around.
You get 360 degree coverage around the whole mattress. There is a installation video if you need help, but it is pretty straight forward.
The fabric is soft and durable. It is made from a smooth, knitted polyester that lays flat. There is no crinkling or noise when you move. It feels quiet and comfortable, not stiff or plasticy. This matters if you do not want to hear crinkling every time you roll over.
The material breathes well, so you stay cool at night.
The zippered closure goes all the way around the mattress. It pulls tight for a secure fit. The zipper is strong and holds the encasement in place. Your mattress is fully enclosed from the top, bottom, and all four sides. This is key for bed bug protection, because they can not find a way in.
The waterproof layer is 100% effective. It blocks spills, sweat, drinks, and accidents from reaching your mattress.
Utopia Bedding Premium Waterproof Bed Bug Mattress Cover, King Zippered Mattress Protector, 10 Inches Deep, Dust Mite Proof 6-Sided Mattress Encasement for Bed
The Utopia Bedding Premium Waterproof Bed Bug Mattress Cover in King size is a zippered mattress protector designed to give you a secure fit and serious peace of mind. It is made for King mattresses that measure 78 inches by 80 inches, and the 10 inch deep pocket ensures it stays snugly in place without slipping off during the night. You do not have to worry about ill-fitting covers with this one.
This encasement provides ultimate protection against bed bugs and dust mites.
The full zippered closure wraps around all six sides of your mattress, creating a barrier that keeps those unwanted pests out. It is a simple way to protect your investment and help you sleep more restfully, knowing your mattress is safe from infestations. The fabric is a top-notch, high-end smooth knitted material that feels comfortable against your skin. It is breathable and does not trap heat, so you stay cool while you sleep.
Plus, it is soft and quiet, meaning no crinkly noises when you move around. Please note that the packaging may vary, but the quality of the product stays the same.
Maintenance is easy. You can just toss this mattress protector in the washing machine for quick and convenient cleaning. It is designed for hassle-free upkeep, so you spend less time on chores and more time relaxing. The cover is also waterproof, offering dual protection against spills, stains, and accidents.
Utopia Bedding Premium Waterproof Bed Bug Mattress Cover, King Zippered Mattress Protector, 14 Inches Deep, Dust Mite Proof 6-Sided Mattress Encasement for Bed
The Utopia Bedding Premium Waterproof Bed Bug Mattress Cover in King size is a zippered mattress protector designed to fully encase your mattress. It offers a 6-sided seal, meaning it wraps around the entire mattress from top to bottom. This cover is made to fit a King mattress that measures 78 inches by 80 inches, and it has a 14 inch deep pocket.
That depth helps it fit thicker mattresses securely, so it shouldn’t slip off or bunch up during the night.
The main job of this encasement is protection. It uses a zippered closure to keep bed bugs and dust mites out. Since it covers all six sides, it creates a barrier that pests can’t get through. This can give you peace of mind, knowing your mattress is safe from these unwanted visitors. The fabric is a high-end smooth knitted material.
It feels soft and quiet, so you won’t hear rustling when you move. It is also breathable, meaning it doesn’t trap heat. You should stay cool and comfortable while you sleep.
Cleaning this mattress protector is simple. You can just toss it in the washing machine for easy upkeep. It is designed to be bed bug proof and also waterproof. This means it offers dual protection against spills, stains, and accidents.
HOSPITOLOGY PRODUCTS Mattress Encasement – Zippered Bed Bug Dust Mite Proof Hypoallergenic – Sleep Defense System – King – Waterproof – Stretchable – Standard 12" Depth – 78" W x 80" L
The HOSPITOLOGY PRODUCTS Mattress Encasement – Sleep Defense System in King size is a zippered cover designed to fully enclose your mattress. It offers protection against bed bugs, dust mites, and other allergens, while also being hypoallergenic and waterproof. This is a practical solution for keeping your sleep surface clean and extending the life of your mattress.
This encasement fits standard King mattresses that measure 78 inches wide by 80 inches long.
The stretchable fabric allows it to accomodate mattress depths from 12 inches up to 18 inches. So whether you have a thinner mattress or a thicker pillow-top style, this cover should work without slipping off. The zipper runs around the entire perimeter, making it easy to put on and remove when needed.
A key feature is the 100% waterproof barrier that covers all six sides of the mattress. This has been lab-tested to ensure no liquids can pass through.
That means spills, sweat, or accidents are stopped before they reach the mattress itself. You don’t have to worry about stains or moisture damaging the inner foam or coils.
The fabric is an extra-soft polyester knit that feels comfortable against your sheets. It also includes a breathable waterproof membrane, so it won’t trap heat while you sleep. Many people find that this type of barrier helps reduce common substances like dust mite waste or pet dander that can reach the sleeper.
Guardmax King Mattress Encasement with Zipper, Waterproof, Bed Bug Proof, and Dust Mite Proof Mattress Protector for King Size Bed up to 12" Deep, Zippered All Around Jersey Knitted Mattress Cover
The Guardmax King Mattress Encasement with Zipper is a practical choice for protecting your king size bed. It fits a mattress measuring 78 by 80 inches, with a depth up to 12 inches. It can stretch a bit more to handle mattresses up to 13 inches deep. This cover is designed to be a solid barrier while still feeling comfortable to sleep on.
The encasement is made from jersey knitted fabric. This material is soft and breathable, so it won’t make your bed feel stiff or hot.
Underneath that soft layer is a TPU laminate. That laminate makes the cover 100% waterproof. If you spill a drink or if there is an accident with urine, nothing will reach your mattress. The liquid just stays on top of the cover where you can wipe it up. This is a simple way to keep your mattress in good shape for years.
Bed bugs are a real concern, and this encasement is built to handle them. It is manufactured in an EPA Registered Facility, which gives you some real assurance.
The nylon coil zipper runs all the way around the cover. It is designed to seal the mattress completely. Once you zip it shut, nothing can get in or out. This means existing bed bugs are trapped inside and cannot bite you, and new ones cannot get into your mattress. It offers the same protection for dust mites, keeping allergens contained.
The zipper itself is a key part of the design.
Moonsea King Mattress Protector Zippered,Ultra Soft Terry Surface Mattress Encasement, 6-Side Waterproof Mattress Cover for Kids, Well Zipper, Noiseless, for King Mattress 76*80(10/11/12/13/14 Inch)
The Moonsea King Mattress Protector Zippered is designed for a king mattress measuring 76 by 80 inches, with a deep pocket that fits 11 to 14 inch mattresses. It is a complete encasement, covering all six sides of your mattress for full protection.
This protector fits great. The stretchable knitted terry fabric slips over your mattress corners without a fight. It stays in place all night, even if you toss and turn.
The deep pocket is deeper than average, so it works well with thicker mattresses, pillow tops, and mattress toppers.
The high-quality zipper is a standout feature. Many mattress encasements use cheap zippers that stick, break, or pop open. Moonsea uses a strong zipper that glides smoothly when you put on or remove the cover. The stitching is also durable. You can trust that the seams wont pop or rip over time, even with regular washing.
Waterproof protection is complete.
Not just the top surface, but all four sides and the bottom are waterproof. This six-side design stops any liquid from leaking into your mattress. Spills, accidents, sweat, or pet messes are contained. The material is breathable too, so you wont feel hot or stuffy while you sleep. Air circulates, keeping you cool.
The super soft terry surface adds comfort. It feels like a plush towel against your skin. There is no crinkly plastic noise, so the cover is noiseless.
King (13-16 in. Deep) SureGuard Mattress Encasement – 100% Waterproof, Bed Bug Proof, Hypoallergenic – Premium Zippered Six-Sided Cover
The King SureGuard Mattress Encasement is a six-sided cover designed to fully protect your mattress. It fits mattresses that are 13 to 16 inches deep, with dimensions of 78 inches by 80 inches. This encasement is made to block a wide range of common problems, from spills to pests.
The cover is 100% waterproof on all six sides. This means it blocks perspiration, bed wetting, and any liquid stains from reaching your mattress. It comes with a 10-year quality guarantee.
For frequent accidents or easy clean-ups, you can place a fitted SureGuard Mattress Protector over this encasement for extra convenience. The encasment itself handles the heavy-duty barrier work.
It is also bed bug proof. The encasement uses a super fine zipper with Invisi-Zip and SureSeal technology. This design completely seals off the mattress from bed bugs, keeping them out and trapping any that are already inside.
For full protection, you can pair it with a SureGuard Box Spring Encasement to cover the entire bed.
Beyond waterproofing and pest control, this cover keeps your mattress clean and fresh. It blocks dust, dirt, and dander on every side. This makes it a strong option for anyone looking to reduce allergens in the bedroom. The material is soft and noiseless, so you won’t hear crinkling when you move.
King Mattress Encasement Buying Guide
Protect your king mattress with a encasement that blocks allergens, dust mites, and spills. It’s a simple upgrade that saves you from expensive replacements. You sleep better knowing your bed is fully sealed. But not all covers are equal. Some feel like plastic bags. Others rip after one wash. Here’s how to pick one that actually works for you.
Waterproof vs. Water-Resistant Barriers
Most models claim to block liquids. But there’s a difference. A waterproof encasement stops urine, sweat, and spills completely. Water-resistant ones may hold up for a few seconds then soak through. If you have kids or pets, go waterproof. Look for a polyurethane laminate coating—it’s silent and breathable. Avoid cheap vinyl that crinkles and traps heat.
Breathability and Fabric Feel
No one wants to sleep on a sweaty plastic sheet. Cotton or cotton-blend tops let air flow. Bamboo rayon is another cool option. Check for active cooling tech if you run hot at night. The backing should be stretchy and quiet. A good test: rub teh fabric between your fingers. If it sounds like a raincoat, move on.
Zipper Quality and Side Access
A weak zipper is the first thing to break. Look for a YKK zipper or a reinforced metal one. The zipper flap should cover the teeth so dust can’t escape. Some encasements zip on one side only. Others wrap all the way around. Full-wrap designs are easier to install on a thick mattress. Make sure the zipper tab is long enough to grip—short tabs are frustrating.
Fit and Depth Compatibility
King mattresses vary in thickness. Standard sizes range from 10 to 14 inches. But pillow tops and hybrids can go deeper. Measure your mattress height before buying. A encasement that’s too loose will bunch up. One that’s too tight may tear. Many brands list a depth range, like 12 to 16 inches. Choose one that matches your bed exactly.
Frequently Asked Questions About King Mattress Encasement
What is a king mattress encasement?
A king mattress encasement is a protective cover that zips all the way around your mattress. It fits like a fitted sheet but covers the top, sides, and bottom. You can think of it as a full-body armor for your bed. It keeps dust mites, bed bugs, and allergens out.
How is it different from a mattress protector?
A mattress protector is usually just a fitted sheet with a thin layer. It covers the top and sides. An encasement wraps around the entire mattress. It has a zipper. This gives you better protection. For a king bed, an encasement is the best choice if you want total coverage.
Will it fit my deep king mattress?
Yes, most king mattress encasements are made to fit deep mattresses. They can handle pillows tops and thick layers. Just check the depth measurement before you buy. Standard sizes range from 8 to 18 inches. Measure your mattress height to be sure.
Is it waterproof?
Many king encasements are waterproof. They have a special layer that stops liquids from soaking in. This is great if you have kids or pets. It also protects against spills and accidents. Look for one that says “waterproof” on the label. Some are also breathable to keep you cool.
How do I clean a mattress encasement?
Cleaning is easy. Most are machine washable. Use cold or warm water. Avoid bleach. Tumble dry on low heat. Check the care instructions first. You should wash it every few months to keep it fresh. It’s a simple way to extend the life of your mattress.
Will it make my bed feel hot?
Not if you choose the right one. Look for breathable materials like cotton or bamboo. Some have cooling technology. They wick away moisture so you stay comfortable. A good king encasement should not trap heat. You can sleep cool and protected.
Can it stop bed bugs?
Yes, a king mattress encasement is a great tool against bed bugs. It traps any bugs already inside. It also prevents new ones from getting in. The zipper is important. Make sure it has a secure closure. This gives you peace of mind, especially if you travel alot.
Do I need a box spring encasement too?
It’s a good idea. Bed bugs can hide in the box spring. A matching encasement for your box spring adds extra protection. You can buy them together. This keeps your whole bed safe.
Closing Thoughts
Your mattress deserves lasting protection; this encasement secures peaceful, undisturbed sleep every night. You get full coverage from dust mites, spills, and bed bugs. The fabric feels soft, not crinkly. And it fits deep mattresses without slipping off. You don’t have to worry about tossing and turning on a noisy cover. Just zip it on and forget it’s there. That’s real peace of mind. Plus, cleaning is easy—just toss it in teh wash. No special steps needed. Your sleep environment stays clean and comfortable with almost no effort on your part. So go ahead, make that small change for better rest.
The right king mattress encasement keeps your bed fresh for years. It blocks allergens and protects your investment. You get better sleep without extra fuss. And you save money by avoiding mattress replacements. Simple, right? This one piece makes a big difference in how you feel each morning. So if you want less dust and more rest, this is the way to go. Your body will thank you, and your budget will too—all from a zippered cover that works while you sleep.