How to dry mattress protector?

A mattress protector dries best on low heat in a dryer or hung flat to air dry, which keeps the waterproof backing from cracking and ensures no moisture is trapped against the mattress.

High heat is what damages a mattress protector, because the polyurethane or vinyl waterproof layer can crack or delaminate. A protector put back on a bed while damp holds moisture against the mattress, which encourages mold and odor. Fully dry the protector, including seams and corners, before remaking the bed.

Waterproof mattress protector backings are typically polyurethane or vinyl, both of which can crack or peel under high dryer heat.
Low-heat tumble drying and flat air drying are the two methods that protect a mattress protector's waterproof layer.
A damp mattress protector pressed against foam or hybrid mattress layers traps moisture and raises the risk of mold and odor.
Seams and fitted corners are the slowest areas of a mattress protector to dry and the most common spots left damp.

01Step-by-Step

Check the care label: read the tag for the maximum dryer temperature and any tumble-dry restrictions, since backing materials and fabric blends vary between protector styles.
Remove excess water: run an extra spin cycle after washing so less moisture remains, which shortens drying time and reduces the heat the protector needs.
Shake it out: give the protector a firm shake to loosen the fabric and separate any folded corners before it goes into the dryer or onto a line.
Choose low heat or air drying: set the dryer to its lowest heat setting, or lay the protector flat across a drying rack or hang it over a shower rod, away from direct high heat.
Pause and redistribute: if tumble drying, stop partway through, pull the protector out, and straighten the fitted corners so they don't stay bunched and wet.
Test the seams and corners: press your hand into the stitched edges and elastic pockets, which dry slowest, and keep drying until no cool or damp spots remain.
Let it cool, then remake the bed: wait until the protector is fully dry and no longer warm before fitting it over the mattress, so no trapped moisture reaches the foam or coil layers.