Linenspa Zippered Waterproof Mattress Encasement

Twin / Standard depth

Best for up to 12" deep mattresses

$19.10

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

Fits up to 12" deepMeasure seam to seam first
Zipper all roundCovers 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

Closure: zipper all round.
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 up to 12" deep mattresses.

Find the cover for your bed size and depth.

Envelope encasement for mattresses up to 12 inches

Your mattress slides in the way a letter goes into an envelope, and a zipper closes it across the top, sides and bottom. It fits standard mattresses up to 12 inches thick, in seven sizes that include Full XL. King also comes in a separate 12-inch version, sold as its own option beside the standard depth.

Under the face fabric sits a waterproof lining that the maker describes as quiet, so you do not hear plastic rustle when you turn over. Sweat and spills stop at that layer before they reach the mattress. You can machine wash and tumble dry the cover, and the maker backs it with a 10-year limited warranty.

Linenspa Zippered Waterproof Mattress Encasement is part of the Bed Bug Blocker catalog, on the mattress encasements shelf.

Every Linenspa Zippered Waterproof Mattress Encasement option we carry
Option	Fits depth	Price
Twin / Standard depth	12"	$19.10
Twin XL / Standard depth	12"	$21.40
Full / Standard depth	12"	$21.17
Full XL / Standard depth	12"	$25.28
Queen / Standard depth	12"	$29.99
King / Standard depth	12"	$36.73
King / 12"	12"	$57.90
California King / Standard depth	12"	$33.85

Side by side
Feature	Linenspa Zippered Waterproof Mattress Encasement	Utopia Bedding Zippered Mattress Encasement	SureGuard Mattress Encasement	Four Seasons Essentials Six-Sided Zippered 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, Full, Queen, King, California King
Fits depth	up to 12" deep	6-15" deep	6-20" deep	9-24" deep
Top	not printed	polyester fabric	cotton terry top	polyester fabric
Closure	zipper all round	zipper all round	zipper all round	zipper with a closed end
All six sides	Yes	Yes	Yes	Yes
Waterproof	Yes	Yes	Yes	Yes
Maker says lab-tested	No	No	Yes	No
Rating	4.6 (39,100)	4.6 (195,500)	4.6 (21,700)	4.6 (15,398)
Price	from $19.10	from $18.99	from $47.97	from $33.99
Buy

How to use the Linenspa Zippered Waterproof Mattress 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 Linenspa Zippered Waterproof Mattress Encasement

Which sizes does the Linenspa Zippered Waterproof Mattress Encasement come in?

Twin, Twin XL, Full, Full XL, Queen, King, California King, cut for up to 12" deep mattresses. Pick a size above and the price of the Linenspa Zippered Waterproof Mattress Encasement changes with it.

Does the Linenspa Zippered Waterproof Mattress Encasement close all six sides?

Yes: the Linenspa Zippered Waterproof Mattress Encasement zips around the whole mattress, bottom included, with a zipper all round.

Can you wash the Linenspa Zippered Waterproof Mattress Encasement?

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