This one-piece protector mattresses up to 15 inches deep, with full 360° elastic edging that holds it snugly in place — no shifting, no bunching, no remaking the bed in the morning. The surface is OEKO-TEX certified 100% terry cotton: plush, highly absorbent, breathable and quiet under a sheet, with a spa-like softness that makes a guest bed feel considered rather than improvised. Beneath it, a durable waterproof barrier shields the mattress from spills and everyday wear. It is built for the beds that get folded away and brought back out — trifold, folding, rollaway and guest beds, RV camper trailers, dorm rooms and spare rooms. Care is simple: machine wash in cold or lukewarm water, tumble dry on low heat, do not bleach or use high-temperature drying, iron if needed. Terry cotton softens with every wash.