Guardmax Zippered Mattress Cover

Queen / 15" / White, Standard

Best for 13-16" deep mattresses

$41.49

Price from our latest catalog update. Checkout, delivery and returns happen at our retail partner.

Fits 13-16" deepMeasure seam to seam first
Zipper with a closed endCovers all six sides
Price from our last updateThe partner checkout has the final price
Sold by our retail partnerDelivery and returns are theirs

What you get

Top: knit jersey.
Closure: zipper with a closed end.
Covers all six sides of the mattress or box spring.
Waterproof, as the maker states.

How to use it

Measure the mattress from the bottom seam to the top, pillow-top included.
Zip the cover shut all round, and close the end of the zipper the way the maker shows.
Leave it on: bed bugs zipped inside die there in time.
Check the cover for holes and tears when you change the sheets.
Pair it with interceptor cups: a cover does not stop a bug from climbing onto the bed.

Will it fit?

Sizes: Twin, Twin XL, Full, Full XL, Queen, King, California King. The maker cuts it for 13-16" deep mattresses.

Find the cover for your bed size and depth.

Jersey knit encasement with a zipper guard flap

Jersey knit polyester faces up, closer in feel to a knit shirt than to plastic, and quiet when you turn over. The nylon zipper travels around three sides and finishes tucked under a stitched guard flap, so no open gap sits at the pull. A waterproof layer sealed under the knit keeps sweat and spills off your mattress.

Depths come at 10, 12 and 15 inches depending on size, and the Queen at 15 inches stretches to fit 16. Seven sizes run from Twin to California King, in white, gray or light blue. The maker says the fabric is OEKO-TEX Standard 100 certified and handles a warm wash and a low tumble dry.

Guardmax Zippered Mattress Cover is part of the Bed Bug Blocker assortment, on the mattress encasements shelf.

Every Guardmax Zippered Mattress Cover option we carry
Option	Fits depth	Price
Twin / 10" / Gray, Standard	13-16" deep (model)	$31.99
Twin / 10" / White, Standard	13-16" deep (model)	$31.99
Twin XL / 10" / Gray, Standard	13-16" deep (model)	$32.99
Twin XL / 10" / White, Standard	13-16" deep (model)	$32.99
Full / 12" / Gray, Standard	13-16" deep (model)	$36.99
Full / 12" / White, Standard	13-16" deep (model)	$36.99
Full / 15" / White, Standard	16"	$38.49
Full XL / 12" / Gray, Standard	13-16" deep (model)	$38.99
Full XL / 12" / White, Standard	13-16" deep (model)	$38.99
Queen / 12" / Gray, Standard	13-16" deep (model)	$39.99
Queen / 12" / White, Standard	13-16" deep (model)	$39.99
Queen / 15" / White, Standard	16"	$41.49
King / 12" / White, Standard	13-16" deep (model)	$41.99
King / 15" / White, Standard	16"	$41.49
California King / 12" / Gray, Standard	13"	$37.45
California King / 12" / Standard, 3 - Light Blue	13"	$35.45

Side by side
Feature	Guardmax Zippered Mattress Cover	Utopia Bedding Zippered Mattress Encasement	Linenspa Zippered Waterproof Mattress Encasement	SureGuard Mattress Encasement
Sizes	Twin, Twin XL, Full, Full XL, Queen, King, California King	Twin, Twin XL, Full, Full XL, Queen, King, California King	Twin, Twin XL, Full, Full XL, Queen, King, California King	Twin, Twin XL, Full, Full XL, Queen, King, California King
Fits depth	13-16" deep	6-15" deep	up to 12" deep	6-20" deep
Top	knit jersey	polyester fabric	not printed	cotton terry top
Closure	zipper with a closed end	zipper all round	zipper all round	zipper all round
All six sides	Yes	Yes	Yes	Yes
Waterproof	Yes	Yes	Yes	Yes
Maker says lab-tested	No	No	No	Yes
Rating	4.6 (9,089)	4.6 (195,500)	4.6 (39,100)	4.6 (21,700)
Price	from $31.99	from $18.99	from $19.10	from $47.97
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How to use the Guardmax Zippered Mattress Cover follows the EPA and the University of Kentucky: zip it shut, leave it on for a year, and stand the bed legs in cups.

This is general information about keeping bed bugs out of a bed, not pest control or medical advice. A licensed pest professional, your doctor and the maker's own instructions come first.

What the public sources say

U.S. EPA, "Do-it-yourself Bed Bug Control". Says to set interceptors under each leg of infested furniture, move it a few inches off the walls with no linens touching the floor, check and clean the interceptors every week, keep inspecting at least every 7 days, and use covers that seal mattresses and box springs so bed bugs inside die. Read October 30, 2026.
University of Kentucky Entomology, ENTFACT-636 "Bed Bugs". Says bed bugs zipped inside an encasement eventually die, that an encasement does not stop a bug from climbing onto the bed, that a trap under each leg with the bed pulled off the wall makes the bed an island, and that a dryer at medium-to-high heat for 10 to 20 minutes kills all life stages. Read October 30, 2026.

Each of these sources is linked in our guide on interceptor cups.

Questions

What Bed Bug Blocker shoppers ask about the Guardmax Zippered Mattress Cover

Which sizes does the Guardmax Zippered Mattress Cover come in?

Twin, Twin XL, Full, Full XL, Queen, King, California King, cut for 13-16" deep mattresses. Pick a size above and the price of the Guardmax Zippered Mattress Cover changes with it.

Does the Guardmax Zippered Mattress Cover close all six sides?

Yes: the Guardmax Zippered Mattress Cover zips around the whole mattress, bottom included, with a zipper with a closed end.

Can you wash the Guardmax Zippered Mattress Cover?

Yes, the Guardmax Zippered Mattress Cover goes in the washer by the care label Guardmax sews in. Its waterproof membrane wears out faster under high heat, so dry the Guardmax Zippered Mattress Cover on medium or low.