King Size Jersey Knitted Zippered Mattress Encasement - Waterproof

In this review the Guardmax King Size Jersey Knitted Zippered Mattress Encasement is evaluated for people who want complete mattress protection without the crinkle of vinyl cases. The bottom line: this encasement is best for sleepers who need a fully sealed, waterproof and bed bug proof barrier while keeping a soft, quiet surface. It fits a standard 78 x 80 x 12 king mattress and stretches to accommodate deeper mattresses up to 13 in, so the biggest reason to buy is the combination of full coverage protection and a comfortable jersey knit finish.

Key Features

• Size & depth: Designed for a king mattress measuring 78 x 80 x 12 and stretches to fit depths up to 13 in so it will cover most standard and slightly deeper mattresses.
• Jersey knitted comfort: The polyester jersey knit top gives a soft, breathable sleep surface that avoids the plastic feel of many waterproof covers.
• 100% waterproof: A TPU laminate membrane prevents liquids from penetrating the protector, protecting the mattress from spills and accidents.
• Bed bug protection: The full-encasement design with a nylon coil zipper is manufactured in an EPA registered facility to provide a sealed barrier against bed bugs.
• Quiet and hypoallergenic: Customers consistently report a low noise level and the encasement blocks dust, dirt, and dander to help reduce nighttime allergy triggers.
• Easy care and install: The cover slips on and off without special tools and can be hand washed or laundered on a quick cycle for simple maintenance.

Who It's For

The Guardmax king encasement is suited for households that require full mattress sealing: families with young children, pet owners dealing with accidents, and anyone tackling bed bug prevention or allergy control. It is also a good pick for shoppers who dislike the plastic sound and want a softer, hotel-like feel while keeping the mattress protected.

Those who need ultra-thick mattress coverage beyond 13 in or who prefer a fitted sheet-style protector rather than a fully zippered encasement should look elsewhere; this product is built for complete encasement and the added protection that a full zipper provides.

Pros & Cons

Pros

• Soft, jersey knit surface that is quiet and comfortable to sleep on.
• Full waterproof protection from the TPU laminate to guard against spills and accidents.
• Durable nylon coil zipper and EPA-registered manufacturing for reliable bed bug sealing.
• Hypoallergenic barrier that reduces exposure to dust, dirt, and dander.

Cons

• Some users report mixed impressions of waterproof performance; real-world results can vary with washing and fit.
• Two people may be needed to install on heavy or large mattresses, which could be inconvenient for some buyers.

Specifications

Product type	Zippered mattress encasement
Material	Jersey knitted polyester with TPU laminate
Size	King 78 x 80 in (fits up to 13 in depth)
Closure	Nylon coil zipper full encasement
Protection	100% waterproof, bed bug and dust mite proof
Care	Handwash or quick machine wash

Our Verdict

The Guardmax King Jersey Knitted Zippered Encasement is a practical choice for buyers who want complete mattress protection without sacrificing comfort. Its bed bug proof construction and waterproof TPU layer make it good value for households needing sealed protection, and the soft knit surface keeps sleep quiet and comfortable.

Frequently Asked Questions

Will this fit a mattress 13 in deep?
Yes, the encasement stretches to fit mattresses up to 13 in deep, but very thick toppers may affect fit and zipper closure.

Is the cover noisy like plastic protectors?
No, the jersey knitted polyester surface is reported to be quiet and more comfortable than vinyl-style protectors.

Can the encasement be washed in a machine?
Yes, it can be hand washed or put on a quick machine wash cycle; follow gentle care to preserve the TPU laminate.