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A full-size zippered mattress encasement in white polyester, sized 54 by 78 inches with a 12-inch depth. It seals the whole mattress behind a waterproof, dust-mite-blocking barrier with a full zipper closure, so bed bugs and allergens stay out of the mattress rather than just off the surface. That puts it a step beyond a fitted pad: pads are easier to wash and swap but leave seams and the sides exposed. It suits allergy sufferers, households dealing with bed bugs, and anyone protecting a new mattress, though the polyester surface and the effort of fitting an encasement are the usual trade-offs.
In stock
Lowest price we've seen: $89.99 on Nov 10 at Mattress Insider. Tracked across 1 store since Nov 10.
Rated 4.9 out of 5 across 151 ratings, buyers are largely satisfied with the fit and the sealed protection. Complaints are few and tend to focus on the feel of the polyester and the work of getting it on.