SafeRest
King
Waterproof Mattress Protector, King
4.6 (280,612 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.
Twin XL
SafeRest Waterproof Twin XL Size Mattress Protector
4.6 (280,612 ratings — across all sizes of this protector)
Twin XL is the mattress of dorm rooms and adjustable bases: five extra inches of length and a sleeper who is usually young, usually warm, and entirely unwilling to tolerate a bed that crackles. Sleepure Twin XL answers all three — a smooth viscose face derived from bamboo, a silent water-resistant barrier underneath, and a stretch skirt deep enough for whatever mattress the room came with.
$29.99
Price checked 2026-10-16
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
Cool-touch viscose face
The surface is smooth and thermally light, so it does not bank heat the way a terry face can. On a narrow bed in a small warm room that difference is the whole argument.
2
Silent water-resistant layer
Sweat, spilled drinks and late-night accidents stop at the barrier instead of soaking into a mattress that belongs to someone else. Nothing about it rustles when the sleeper turns.
3
Deep-stretch fit to 18 inches
One skirt handles the thin institutional Twin XL and the tall hybrid on an adjustable frame. Installation takes a minute, which is about the attention span a move-in day allows.
The night test
The dorm-move test: at the end of the year, lift the protector off and look at the mattress. A clean surface and a protector that took every hit means the deposit is safe and the next tenant inherits a decent bed.
Care
Machine wash cold, tumble dry low, no special handling. It washes alongside the sheets and dries in a single cycle, which is all the care a shared laundry room will ever permit. Full care guide →
More in Mattress Protectors
Full
Waterproof Mattress Protector, Full
4.6 (280,612 ratings — across all sizes of this protector)
Our original cotton terry protector in the Full cut — the size that furnishes first apartments and second bedrooms.
Queen
Waterproof Mattress Protector, Queen
4.6 (280,612 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.