SafeRest
King
Waterproof Mattress Protector, King
4.6 (280,416 ratings — across all sizes of this protector)
The protector that made our name, cut for the 76 by 80 inch King surface two people actually share.
King
SafeRest Waterproof Mattress Protector King Size
New to the catalog
A King bed is six feet and four inches of surface to defend, and the Essential does it with the least material of anything in our line. It is a thin, silent, fitted waterproof layer cut for King mattresses up to 18 inches deep — for owners who want the insurance without a millimeter of added loft, and at a price that undercuts most of the category.
$23.99
Price checked 2026-08-09
In stock
Your order is placed with and fulfilled by our retail partner — with its delivery network, tracking and return window.
Three layers of thinking
1
Barely-there build
No padding and no terry loft: the Essential adds a barrier, not a feel. On a King — where two sleepers may disagree about any change to the bed — a protector nobody can detect is the one that stays on.
2
Full waterproof coverage
The membrane runs edge to edge across the full King surface. Coffee on a Sunday morning, a pet on the duvet, a humid summer of sweat — it all stops here.
3
Smooth fitted-sheet fit
Deep stretch pockets grip tall King profiles up to 18 inches and pull the surface flat. It goes on in one pass and does not creep off the far corner you cannot reach.
The night test
Two-sleeper test: if neither of you can point to a night the protector made itself known — no sound, no warmth, no texture — then it passed. The Essential is engineered to lose that argument in silence, every night.
Care
Machine wash cold, tumble dry low. The slim build means even a King-size wash dries in a single cycle, so the bed is never out of service waiting on the laundry. Full care guide →
More in Mattress Protectors
Queen
Waterproof Mattress Protector, Queen
4.6 (280,416 ratings — across all sizes of this protector)
Our original cotton terry protector in the Queen cut — the size on most beds, and the one most guests sleep on.
Queen
Classic Plus Waterproof Protector, Queen
New to the catalog
The Classic Plus: our lightest Queen protector, vinyl-free and priced to cover every spare bed you own.