Mattress Encasement Zippered King - Waterproof Hypoallergenic

In this review of the Mattress Encasement Zippered King, the bottom line is simple: it is best for sleepers who need a reliable, breathable barrier against bed bugs, dust mites and liquids. The single biggest reason to buy is the fully sealed, lab-tested waterproof protection on all six sides combined with a soft, stretchable polyester knit that still sleeps cool. The cover is straightforward to install and care for, and it comes with a 5-year limited manufacturer warranty that gives extra confidence for long-term use.

Key Features

• Zippered, stretchable fit: The cover stretches to fit King mattresses 78 x 80 in and handles standard depths from 12 in to 18 in for a snug, encasing fit.
• 100% waterproof barrier: A lab-tested waterproof membrane protects all six sides of the mattress from spills and fluids without compromising the surface fabric.
• Breathable polyester knit: Extra-soft polyester fabric provides a comfortable sleeping surface while the membrane is designed not to trap heat.
• Hypoallergenic defense: The sealed encasement reduces exposure to dust mites and bed bugs to help protect respiratory function and improve sleep for allergy sufferers.
• Easy care and warranty: Machine washable and tumble dry low for routine cleaning, plus a 5-year limited manufacturers warranty for added reassurance.

Who It's For

The encasement is ideal for people who prioritize mattress hygiene and pest protection: allergy sufferers, parents protecting a child's mattress, or anyone moving into a new or treated sleeping environment. Its cool-feeling knit fabric will suit sleepers who dislike plastic-feeling covers but still need a waterproof shield.

Those who should look elsewhere include buyers who need a fitted sheet-style protector (this is a full encasement with a zipper) or shoppers with non-standard mattress sizes outside 78 x 80 in King dimensions or depths beyond 18 in.

Pros & Cons

Pros

• Protects mattress on all six sides with a lab-tested waterproof barrier for comprehensive spill defense.
• Soft, breathable polyester knit feels comfortable under sheets and resists trapping heat.
• Stretches to fit mattress depths from 12 in to 18 in and is easy to put on and remove via zipper.
• Machine washable with a 5-year limited manufacturers warranty adds long-term value.

Cons

• The full encasement design includes a zipper which may be unnecessary for buyers wanting only a top-surface protector.
• Fit is specific to standard King 78 x 80 in; custom or non-standard sizes are not covered.

Specifications

Our Verdict

This mattress encasement is a practical, good-value choice for anyone who needs comprehensive protection from bed bugs, dust mites and spills while retaining a comfortable, breathable sleep surface. The stretch fit for 12 in to 18 in depths, easy care, and 5-year warranty make it a sensible long-term investment for standard King mattresses.

Frequently Asked Questions

Will this fit a deep pillow-top King mattress?
The cover stretches to fit standard depths from 12 in to 18 in, so it will fit most pillow-top mattresses within that range.

Does the waterproof barrier trap heat?
The extra-soft polyester knit with a breathable membrane is designed to avoid trapping heat and should feel cooler than vinyl-style protectors.

Can it be machine washed safely?
Yes, the encasement is machine washable and can be tumble dried on low according to the care instructions.