Mattress Safe KleenCover Ultimate Encasement

Twin XL

Best for 9-15" deep mattresses

$65.99

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

Fits 9-15" deepMeasure seam to seam first
Zipper with a closed endCheck the end of the zipper
Price from our last updateThe partner checkout has the final price
Sold by our retail partnerDelivery and returns are theirs

What you get

Closure: zipper with a closed end.
Waterproof, as the maker states.
The maker says this cover was tested in a lab against bed bugs. That is the maker's claim, and we have not tested it.

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 XL, Full XL, Queen, King. The maker cuts it for 9-15" deep mattresses.

Find the cover for your bed size and depth.

Stretch encasement with a patented hook zipper

One cover stretches across mattress depths from 9 to 15 inches, in Twin XL, Full XL, Queen and King. That helps when you are not sure exactly how deep your mattress runs. The zipper ends in what the maker calls its Zipper with the Hook, a patented lock that holds the closure tight once you finish.

Your mattress sits wrapped in waterproof material on all six sides, and the maker says the material still lets air pass through. The maker also states the laminated fabric was tested to the federal mattress flammability standard, 16 CFR Part 1632, and to a ULC burn test. Read those as fire results for the fabric, not as anything about bugs.

Mattress Safe KleenCover Ultimate Encasement is part of the Bed Bug Blocker lineup, on the mattress encasements shelf.

Every Mattress Safe KleenCover Ultimate Encasement option we carry
Option	Fits depth	Price
Twin XL	9-15"	$65.99
Full XL	9-15"	$79.99
Queen	9-15"	$83.99
King	9-15" deep (model)	$99.99

Side by side
Feature	Mattress Safe KleenCover Ultimate Encasement	Utopia Bedding Zippered Mattress Encasement	Linenspa Zippered Waterproof Mattress Encasement	SureGuard Mattress Encasement
Sizes	Twin XL, Full XL, Queen, 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	9-15" deep	6-15" deep	up to 12" deep	6-20" deep
Top	not printed	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	No	Yes	Yes	Yes
Waterproof	Yes	Yes	Yes	Yes
Maker says lab-tested	Yes	No	No	Yes
Rating	4.7 (33)	4.6 (195,500)	4.6 (39,100)	4.6 (21,700)
Price	from $65.99	from $18.99	from $19.10	from $47.97
Buy

How to use the Mattress Safe KleenCover Ultimate Encasement 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 Mattress Safe KleenCover Ultimate Encasement

Which sizes does the Mattress Safe KleenCover Ultimate Encasement come in?

Twin XL, Full XL, Queen, King, cut for 9-15" deep mattresses. Pick a size above and the price of the Mattress Safe KleenCover Ultimate Encasement changes with it.

Does the Mattress Safe KleenCover Ultimate Encasement close all six sides?

It zips around the mattress. The maker does not print a six-sided claim for the Mattress Safe KleenCover Ultimate Encasement, so check the end of the zipper when it arrives.

Can you wash the Mattress Safe KleenCover Ultimate Encasement?

Yes, the Mattress Safe KleenCover Ultimate Encasement goes in the washer by the care label Mattress Safe sews in. Its waterproof membrane wears out faster under high heat, so dry the Mattress Safe KleenCover Ultimate Encasement on medium or low.