7 Best King Mattress Encasements That Protect Like a Pro
You’re investing in a quality mattress, so why wouldn’t you protect it? Bed bugs, dust mites, and allergens can compromise both your sleep and your mattress’s longevity. The right encasement acts as your first line of defense, but with so many options available, you’ll want to know which ones actually deliver on their promises—and which features matter most for your needs.
Quick Overview
- Six-sided zippered design with 360° encasement provides comprehensive protection against bed bugs, dust mites, and allergens.
- Waterproof barriers block liquids, stains, and spills while maintaining breathability to prevent heat retention and discomfort.
- Stretchy, machine-washable fabrics accommodate various mattress depths (12-20 inches) and withstand repeated cleaning without damage.
- Advanced technologies like Invisi-Zip and SureSeal create impenetrable pest barriers verified through laboratory testing and certification.
- Warranty coverage up to 10 years demonstrates manufacturer confidence in durability and long-lasting protective performance.
| SureGuard King Mattress Encasement Waterproof Bed Bug Proof |
| Most Eco-Conscious | Waterproof Protection: 100% waterproof blocks perspiration, liquids, and stains | Bed Bug Protection: Bed bug proof with Invisi-Zip and SureSeal technology | Pocket Depth: Fits mattresses 17 to 20 inches deep | VIEW LATEST PRICE | Read Our Analysis |
| Utopia Bedding Waterproof Mattress Protector King Size |
| Best Value | Waterproof Protection: 100% waterproof blocks spills, sweat, and accidents | Bed Bug Protection: Bed bug and dust mite proof encasement | Pocket Depth: Accommodates mattresses up to 15 inches deep | VIEW LATEST PRICE | Read Our Analysis |
| Amazon Basics Zippered Waterproof Mattress Encasement King |
| Most Sustainable | Waterproof Protection: 100% waterproof barrier protects against spills and liquid damage | Bed Bug Protection: Secure barrier against bed bugs and dust mites | Pocket Depth: 12-inch (30cm) pocket depth | VIEW LATEST PRICE | Read Our Analysis |
| HOSPITOLOGY Mattress Encasement King Waterproof Bed Bug Proof |
| Best Comfort | Waterproof Protection: 100% waterproof barrier on all six sides | Bed Bug Protection: Protects against bed bugs, dust mites, and allergens | Pocket Depth: Fits standard depths from 12 to 18 inches | VIEW LATEST PRICE | Read Our Analysis |
| King Size Mattress Protector Waterproof Zippered Cover |
| Easiest Installation | Waterproof Protection: 100% waterproof with polyurethane inner lining | Bed Bug Protection: Velcro zipper seal prevents pests and contaminants | Pocket Depth: Fits mattresses 12 to 16 inches deep | VIEW LATEST PRICE | Read Our Analysis |
| Utopia Bedding Waterproof Bed Bug Mattress Cover King |
| Best Overall | Waterproof Protection: Waterproof cover protects against spills and stains | Bed Bug Protection: Ultimate protection against bed bugs and dust mites | Pocket Depth: 12-inch deep pocket for secure fit | VIEW LATEST PRICE | Read Our Analysis |
| SafeRest Zippered Waterproof Mattress Protector King |
| Premium Protection | Waterproof Protection: 100% waterproof barrier prevents accidents, sweat, and spills | Bed Bug Protection: 360° protection safeguards from bed bugs and allergens | Pocket Depth: Fits mattresses up to 15 inches thick | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
SureGuard King Mattress Encasement Waterproof Bed Bug Proof
If you’re battling bed bugs, dealing with allergies, or managing nighttime accidents, the SureGuard King Mattress Encasement offers thorough protection. This King-sized cover features a zippered six-sided design that completely encases your mattress, fitting depths from 17 to 20 inches. You’ll appreciate its 100% waterproof barrier that blocks perspiration, liquids, and stains while maintaining a soft, noiseless cotton terry top. The fine zipper uses Invisi-Zip and SureSeal technology to keep bed bugs out effectively. You’re also getting hypoallergenic defense against dust, dirt, and dander. The encasement is free from harmful chemicals like vinyl, PVC, and phthalates, earning GREENGUARD Gold certification. It’s machine washable, dryable, and backed by a 10-year guarantee.
- Waterproof Protection:100% waterproof blocks perspiration, liquids, and stains
- Bed Bug Protection:Bed bug proof with Invisi-Zip and SureSeal technology
- Pocket Depth:Fits mattresses 17 to 20 inches deep
- Zipper Design:Fine zipper with Invisi-Zip and SureSeal technology
- Fabric Material:Soft, noiseless 100% cotton terry top
- Machine Washable:Machine washable and dryable
- Additional Feature:GREENGUARD Gold certified
- Additional Feature:10-year quality guarantee
- Additional Feature:Cotton terry top moisture-wicking
Utopia Bedding Waterproof Mattress Protector King Size
The Utopia Bedding Waterproof Mattress Protector in King Size delivers thorough defense against life’s messiest moments—spills, accidents, sweat, and allergens. You’ll appreciate the 100% polyester construction that’s smooth, knitted, and non-crinkling, ensuring quiet comfort without stiffness. The 360° encasement wraps all sides of your mattress with a secure zippered closure, fitting mattresses up to 15 inches deep. Stretchy fabric makes installation effortless while maintaining a snug fit. You can easily maintain it with machine washing and low-heat drying. This King Size protector accommodates 78×80-inch mattresses, providing extensive bed bug and dust mite protection for a cleaner sleeping environment.
- Waterproof Protection:100% waterproof blocks spills, sweat, and accidents
- Bed Bug Protection:Bed bug and dust mite proof encasement
- Pocket Depth:Accommodates mattresses up to 15 inches deep
- Zipper Design:Wrap-around zippered design for tight, secure fit
- Fabric Material:100% polyester smooth and knitted fabric
- Machine Washable:Machine wash, tumble dry on low heat
- Additional Feature:Fits 15-inch deep mattresses
- Additional Feature:Non-crinkling design
- Additional Feature:Stretchy fabric easy installation
Amazon Basics Zippered Waterproof Mattress Encasement King
For those seeking thorough mattress protection without sacrificing breathability, Amazon Basics’ Zippered Waterproof Mattress Encasement delivers a practical solution. You’ll appreciate the 360-degree zippered coverage that creates a secure barrier against bed bugs and dust mites while maintaining a completely waterproof shield. The encasement features 71% recycled post-consumer polyester with polyurethane backing, making it environmentally conscious without compromising durability. Its flexible fabric construction guarantees noise-free comfort and breathability. You can machine wash and dry it repeatedly while it retains its protective properties wash after wash. With reinforced seams designed for frequent use and a 12-inch pocket depth suited for king mattresses, you’re investing in reliable, long-lasting protection.
- Waterproof Protection:100% waterproof barrier protects against spills and liquid damage
- Bed Bug Protection:Secure barrier against bed bugs and dust mites
- Pocket Depth:12-inch (30cm) pocket depth
- Zipper Design:360-degree zippered coverage
- Fabric Material:Polyester with polyurethane backing
- Machine Washable:Machine washable and dryer-friendly
- Additional Feature:71% recycled post-consumer polyester
- Additional Feature:Reinforced seams enhanced durability
- Additional Feature:Flexible breathable noise-free comfort
HOSPITOLOGY Mattress Encasement King Waterproof Bed Bug Proof
You’ll find HOSPITOLOGY’s King Mattress Encasement particularly valuable if you’re dealing with bed bugs, dust mites, or allergens that affect your sleep quality and respiratory health. This encasement fits King-sized mattresses measuring 78″ W x 80″ L with depths from 12″ to 18″, stretching for a secure fit. The extra-soft polyester knit fabric feels comfortable while maintaining breathability, and its waterproof membrane prevents heat retention. You’re getting complete protection on all six sides without sacrificing comfort. Machine washing and tumble drying on low heat keep maintenance hassle-free. HOSPITOLOGY backs this investment with a 5-Year Limited Manufacturer’s Warranty, giving you confidence in your purchase.
- Waterproof Protection:100% waterproof barrier on all six sides
- Bed Bug Protection:Protects against bed bugs, dust mites, and allergens
- Pocket Depth:Fits standard depths from 12 to 18 inches
- Zipper Design:Zippered closure keeps mattress safe
- Fabric Material:Extra-soft polyester knit fabric with breathable waterproof membrane
- Machine Washable:Machine washable and tumble dried on low heat
- Additional Feature:Fits 12-18 inch depths
- Additional Feature:Extra-soft polyester knit fabric
- Additional Feature:5-year limited manufacturer warranty
King Size Mattress Protector Waterproof Zippered Cover
A six-sided zippered encasement makes this protector ideal for households with pets, kids, or anyone concerned about spills and accidents. You’ll appreciate the soft, breathable fabric that won’t crinkle or make noise while you sleep. The polyurethane inner lining blocks all liquids and moisture, while the velcro zipper seal keeps dust and pests out completely. Installation is straightforward—you simply place your mattress in the sealed end and zip around three sides for a snug fit. Made from durable polyester and reinforced with a secondary 3″ polyester lining at the seam, this protector fits King mattresses 12″ to 16″ deep. Machine wash it whenever needed to maintain its protective qualities for years.
- Waterproof Protection:100% waterproof with polyurethane inner lining
- Bed Bug Protection:Velcro zipper seal prevents pests and contaminants
- Pocket Depth:Fits mattresses 12 to 16 inches deep
- Zipper Design:Full zipper wraps around three sides for easy installation
- Fabric Material:High-quality polyester surface with polyurethane inner lining
- Machine Washable:Machine washable for easy cleaning
- Additional Feature:Velcro zipper seal technology
- Additional Feature:3-inch secondary polyester lining
- Additional Feature:Fits 12-16 inch deep
Utopia Bedding Waterproof Bed Bug Mattress Cover King
The Utopia Bedding Waterproof Bed Bug Mattress Cover King stands out as the ideal choice for anyone seeking thorough mattress protection without sacrificing comfort. You’ll appreciate its premium smooth knitted fabric, which feels soft against your skin while maintaining breathability. The zippered encasement traps bed bugs and dust mites effectively, keeping your mattress pristine. Its waterproof layer guards against spills and stains, extending your mattress’s lifespan. The 12-inch deep pocket ensures a secure fit on your king-size mattress. You’ll love how easy it is to maintain—simply toss it in the washing machine for quick, hassle-free cleaning. This dual-protection cover delivers professional-grade safeguarding at an accessible price point.
- Waterproof Protection:Waterproof cover protects against spills and stains
- Bed Bug Protection:Ultimate protection against bed bugs and dust mites
- Pocket Depth:12-inch deep pocket for secure fit
- Zipper Design:Zippered closure for pest protection
- Fabric Material:High-end smooth knitted fabric
- Machine Washable:Machine washable for hassle-free cleaning
- Additional Feature:High-end smooth knitted fabric
- Additional Feature:12-inch deep pocket fit
- Additional Feature:Soft quiet heat-free design
SafeRest Zippered Waterproof Mattress Protector King
SafeRest’s zippered waterproof encasement stands out for sleepers who need extensive protection against allergens, bed bugs, and moisture damage. You’ll appreciate the 360° coverage that completely encloses your mattress, creating an impenetrable barrier against spills, sweat, and accidents. The waterproof layer prevents liquids from seeping into your mattress, while the soft cotton exterior keeps you comfortable without noise or heat buildup. High-quality zippers and reinforced stitching guarantee durability through years of use, and it fits mattresses up to 15 inches thick with a secure seal. You can easily machine wash the protector, maintaining a fresh, hygienic sleep surface with minimal effort.
- Waterproof Protection:100% waterproof barrier prevents accidents, sweat, and spills
- Bed Bug Protection:360° protection safeguards from bed bugs and allergens
- Pocket Depth:Fits mattresses up to 15 inches thick
- Zipper Design:High-quality zipper with strong stitching
- Fabric Material:Soft, noiseless cotton fabric
- Machine Washable:Machine washable for easy maintenance
- Additional Feature:Soft noiseless cotton fabric
- Additional Feature:High-quality zipper strong stitching
- Additional Feature:Fits 15-inch thick mattresses
Factors to Consider When Choosing a King Mattress Encasement
When you’re selecting a king mattress encasement, you’ll want to evaluate how well it fits your mattress depth and whether its waterproof barrier meets your needs. You should also examine the fabric material, bed bug protection standards, and the product’s durability alongside its warranty coverage. These five factors will help you find an encasement that offers both protection and longevity for your investment.
Mattress Depth Compatibility
One critical factor you’ll need to verify when shopping for a king mattress encasement is whether it’ll accommodate your mattress’s depth. King mattresses typically range from 12 to 20 inches deep, but most encasements have specific maximum depth limits—some fit up to 15 inches, while others handle 18 inches or more.
Selecting an encasement that matches your mattress depth guarantees a secure, snug fit. An oversized encasement won’t grip your mattress properly, causing unwanted movement and slippage during sleep. For maximum flexibility, consider encasements made with stretchy fabric that adjusts to various depths while maintaining a reliable seal.
A properly fitting encasement optimizes protection against allergens and liquids while preserving your mattress’s comfort and stability.
Waterproof Barrier Quality
Because liquids—whether from spills, perspiration, or accidents—can permanently damage your mattress, you’ll want an encasement with a high-quality waterproof barrier.
Look for a 100% waterproof rating that completely blocks liquid penetration. The barrier should use durable materials like polyurethane, which resists wear and tear from repeated use and cleaning.
However, waterproofing alone isn’t enough. You’ll benefit from a breathable layer that prevents overheating while maintaining waterproof protection. This balance keeps you comfortable throughout the night.
For added comfort, choose encasements featuring soft, noiseless fabrics or cotton terry tops. These materials enhance your sleep experience without compromising the protective qualities you need. A quality waterproof barrier ultimately extends your mattress’s lifespan and protects your investment.
Fabric Material Selection
The fabric you choose for your king mattress encasement directly impacts both comfort and protection. You’ll want to prioritize soft, breathable materials like 100% cotton or polyester that enhance comfort while reducing heat retention during sleep. Knitted or stretchable fabrics improve fit and eliminate crinkling sounds that disrupt rest. Waterproof materials are essential—they effectively block liquids from spills, sweat, and stains, keeping your mattress clean and protected. For those with allergies or respiratory issues, hypoallergenic materials reduce allergens and irritants considerably. Finally, select machine-washable, durable fabrics that simplify maintenance and extend your encasement’s lifespan. By carefully evaluating these material characteristics, you’ll find an encasement that delivers comfort, protection, and lasting quality.
Bed Bug Protection Standards
If you’re concerned about bed bug infestations, you’ll need to prioritize encasements with secure zippered closures that completely seal your mattress and prevent these pests from entering or escaping.
Look for encasements featuring advanced technologies like Invisi-Zip and SureSeal, which create nearly impenetrable barriers against bed bugs and allergens. You should verify that your chosen encasement has laboratory testing and certification confirming its ability to block both live bed bugs and their eggs.
Ensure your encasement provides 360-degree coverage, protecting all sides including seams and corners where bed bugs hide. Additionally, select breathable fabrics that allow airflow while remaining impermeable to pests, so you’ll maintain comfort throughout the night without compromising protection.
Durability And Warranty
Once you’ve secured a bed bug-proof encasement, you’ll want to guarantee it maintains its protective qualities over time. Examine the warranty period carefully—quality encasements typically offer 5 to 10 years of coverage, signaling manufacturer confidence in durability. Prioritize products featuring reinforced seams and high-quality fabrics that resist deterioration under frequent use. Check that the material retains its protective properties after multiple washes, since regular cleaning is essential for maintaining effectiveness. You should also verify that care instructions confirm machine washability without compromising the encasement’s integrity. Look for breathable fabrics that remain soft and noiseless throughout their lifespan. By selecting an encasement backed by solid construction standards and extensive warranty protection, you’ll invest in long-term bed protection.
Ease Of Maintenance
Since you’ll be washing your king mattress encasement regularly to maintain its protective barrier, you’ll want a product that simplifies this essential task. Look for machine-washable encasements with synthetic fabrics that dry quickly and resist wrinkles, reducing your workload considerably. Verify that reinforced zippers and seams can withstand frequent washing without deteriorating, guaranteeing your investment lasts years. Choose designs featuring user-friendly installation and removal systems that don’t complicate maintenance routines. Durable materials that retain their protective qualities after repeated washes prove invaluable for long-term performance. By prioritizing these maintenance-focused features, you’ll guarantee your king mattress encasement remains effective and manageable throughout its lifespan, protecting your mattress without creating additional household burden.
Breathability And Comfort
While a king mattress encasement must protect your investment, it shouldn’t compromise your comfort during sleep. You’ll want to prioritize breathability to prevent heat retention and maintain a cooler sleeping environment throughout the night.
Look for materials like soft cotton or breathable synthetic fabrics that promote airflow and wick away moisture, keeping you dry and comfortable. A noiseless design is equally important—crinkling sounds can disrupt your rest, so choose encasements that stay silent during movement.
The encasement should stretch and fit snugly around your mattress, preventing slipping that causes discomfort. High-quality, breathable options support proper body temperature regulation, reducing overheating—especially vital if you naturally sleep hot.
These features work together to deliver both protection and the comfortable, undisturbed sleep you deserve.
Hey there, I’m Alex Hanson and I’m passionate about all things covers! Whether you’re looking for a car seat cover to protect your vehicle or an oven cover to keep your kitchen clean, I’m here to help. With years of experience in the industry, I have plenty of knowledge and insights to share with my readers. So, if you care about protecting your belongings and making them look their best, you’re encouraged to read my blog as I explore the perfect cover for every need.