We slept on this for three weeks on a queen latex mattress. The biggest difference from cheap waterproof covers is the silence — you stop noticing it’s there within a night. The cotton sleep surface stays cool enough that we did not feel the membrane underneath.

The zipper is sturdy and tucks behind a flap, so it does not catch a fitted sheet. After one accidental water spill and a planned dog-on-bed incident, the mattress underneath stayed completely dry. After a wash and tumble, it came out flat, no shrinking.