【Upgraded Dual Layer Design】Multi-combination use，3 Inches Combination Mattress->2 Inches 30D Cooling Gel memory Foam->1 Inches Pillow Top Polyester Filler 【Stress Relief & Curve Support】30D Cooling Gel Memory Foam is Designed to Relieve Pressure Points, Prevent Neck/Shoulder/Back Pain and Improve Sleep Quality. 【BREATHABLE & COOLING】Anti-pilling Terry Surface - -> Cooling, skin-friendly and good wicking properties.Suitable for hot Sleepers 【FULLY WRAPPED SKIRT & WASHABLE】16 inch Deep Pocket - -> Fits up to 21 inches, prevent the mattress from moving.Removable and machine washable. 【Customer Service】 We provide 30-day return/replacement service and your 100% satisfaction. Pls contact with our customer support through Amazon when you need.