For well-protected, healthy sleep[email protected]
SafeRest
Box Spring Encasement, Twin
Twin · box spring

SafeRest Premium 9" Thick Box Spring Encasement - Waterproof - Breathable, Noiseless, Vinyl Free - Fits Up to 9" - Twin

4.7 (9,033 ratings — across all sizes of this protector)

Almost nobody protects the box spring, and the foundation is the most neglected part of any bed: hollow, seamed, dusty and never inspected. This Twin encasement wraps it in high-grade polyester on all six sides, closes with our Micro-Zipper, and stays there for years. Fit it once when the bed goes together and the under-mattress half of the problem simply ends.

$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

Six-sided foundation shell

Durable high-grade polyester surrounds the box spring completely. The open frame that used to be free real estate for dust and pests becomes a sealed box with nothing to move into.

2

Micro-Zipper with 360 Secure

The zipper teeth are fine enough to bar even early-stage bed bugs, and the 360 Secure feature seals the zipper traveler under a flap so the closure cannot drift open as the foundation flexes.

3

Waterproof and vinyl free

Spills that run off the mattress edge land here. The waterproof layer keeps the wood and fabric below dry, and there is no vinyl involved — no plastic smell, no stiffness, no crackle.

The night test

You never touch a box spring, so all the evidence is negative: no dust bloom when someone drops onto the bed, no musty smell in a humid summer, nothing moving where you cannot look.

Care

There is no routine care — it lives under the mattress and outside the laundry cycle entirely. If it ever needs freshening, zip it closed, machine wash cold and tumble dry low. Full care guide →

More in Zippered Encasements