"ORGANIC COTTON SLEEP SURFACE + TPU WATERPROOF MEMBRANE: The sleep surface of our organic waterproof mattress protector is made from organic cotton — soft, breathable, and gentle on skin. The smooth jacquard texture may feel silky at first, but it's pure organic cotton, not polyester. A thin TPU waterproof layer underneath provides silent, reliable protection without changing the natural cotton feel. OEKO-TEX certified. WATERPROOF & LAB-TESTED DURABILITY: Our upgraded 250 GSM organic cotton mattress protector guards your mattress from spills and stains. This waterproof mattress protector cotton surface is backed by a silent TPU membrane, laboratory-tested to confirm reliable performance even after repeated washes. Also available as an organic mattress pad in our Deluxe line. KING FIT (76” × 80”) + DEEP POCKET: This fitted cotton mattress cover features a durable stretch skirt for a snug, stay-put fit on mattresses up to 18"". Designed as a mattress protector cotton layer (not a thick topper) to protect your bed while keeping the natural feel of your mattress. Prefer a cotton skirt? Choose our Deluxe version with a cotton jersey skirt. SKIN-FRIENDLY & BREATHABLE: Our organic mattress cover lets air flow freely through the cotton surface, keeping you cool and comfortable all night. This breathable mattress protector is perfect for those with sensitive skin — no vinyl, no PVC, no synthetic materials touching your body. Just pure organic cotton mattress pad comfort. CLEAR MATERIAL BREAKDOWN: Sleep surface: organic cotton. Waterproof layer: TPU (no PVC, vinyl, or phthalates). Skirt: stretch polyester for a secure fit. This organic cotton surface mattress protector keeps the natural feel of your bed while offering invisible waterproof protection underneath."