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.

New to the catalog
This is the crib version of our fitted protector, and it is built around one scenario: the middle-of-the-night change. It pulls over the crib mattress like a fitted sheet, stops every leak at the surface, and comes off with one hand while the other holds the baby. For the nursery rotation — protector on, sheet over, spare set folded nearby — there is no simpler system.
In stock
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The membrane covers the full sleep surface, so overnight leaks stay on the washable layer. The foam or coil core below stays dry, which is what keeps a crib mattress safe and odor-free for the second year — or the second child.
Babies wake at the crinkle of cheap liners. This surface is soft cotton toweling over a silent barrier, and it breathes, so it does not add heat to a sleeper who already runs warm.
The elastic skirt is cut for standard crib mattresses and does not fight you. Strip, wipe, re-dress: the crib is back in service in the time it takes to warm a bottle.
The 3 a.m. standard applies: if a leak means one trip to the hamper and a fresh sheet, the protector passed. If it ever means scrubbing a bare mattress by nightlight, something upstream failed. This layer exists so that never happens.
Wash cold, tumble dry low, and buy the rotation you need — the small size makes this the easiest piece of bedding in the house to keep in spares. Two protectors and three sheets will see most families through the diaper years. Full care guide →
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.
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.
New to the catalog
The Classic Plus: our lightest Queen protector, vinyl-free and priced to cover every spare bed you own.