For well-protected, healthy sleep[email protected]
SafeRest
Zippered Mattress Encasement, Twin (6–9 in)
Twin · 6–9 in

SafeRest Zippered Mattress Protector - Premium 6-9 Inch Waterproof Mattress Cover for Bed - Breathable, Noiseless Washable Mattress Encasement - Twin

4.6 (17,911 ratings — across all sizes of this protector)

Twin mattresses on bunk frames and daybeds are usually thin, and they belong to the hardest sleepers in the house. This encasement seals a 6-to-9-inch Twin completely: waterproof on every face, soft and silent against the sheet, and closed with a zipper small-toothed enough to be a genuine barrier rather than a decoration.

$48.99
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

Sized for thin mattresses

The 6-to-9-inch cut fits bunk and trundle mattresses properly, which is what keeps the shell tight. Slack fabric on a child bed becomes a wrinkle, then a complaint, then a protector in a drawer.

2

Full 360 degree coverage

Top, bottom and all four sides in one shell. For hand-me-down mattresses this is the real value: a verified barrier between whatever the bed carried before and the child sleeping on it now.

3

Waterproof, quiet, washable

A waterproof layer on every panel under soft noiseless cotton. It breathes rather than trapping heat, and it goes in the machine whenever a week goes badly.

The night test

The top-bunk test: change the sheets and look at the mattress. If every mark from the year lives on the encasement and none on the mattress, the bed will outlast the childhood assigned to it.

Care

Machine wash cold with the zipper fully closed and tumble dry low. A Twin shell dries in one cycle, so the bed is remade the same afternoon. Full care guide →

More in Zippered Encasements