WATERPROOF: soft, quiet poly knit top fabric is backed by a waterproof layer, protecting your mattress from unexpected spills and stains STAIN RELEASE: finish helps protect the fabric from unsightly stains, keeping your mattress clean in between washes  PERFECT GRIP SIDEWALLS: stretches accommodate twin and full mattresses up to 15 inches deep and queen and king mattresses up to 17 inches deep EASY CARE INSTRUCTIONS: machine wash warm, with nonchlorine bleach when needed. Tumble dry on lowest setting separately to avoid protector damage. Dryer temps vary by brand, use the lowest setting and remove when dry. Do not iron. LIFETIME WARRANTY: Rest easy knowing you’ve made the quality, trusted choice in Sealy The Sealy Spot and Stain Protection Fitted Mattress Protector is an essential shield for your mattress. The soft, quiet waterproof top fabric guards against unexpected spills while the stain-release finish adds extra protection for your mattress. This protector goes on like a fitted sheet for easy installation and features PerfectGrip sidewalls that stretch to accommodate twin-full size mattresses up to 15 inches deep and queen-king size mattresses up to 17 inches deep. This protector is machine washable for easy care and is backed by Sealy’s lifetime warranty.