This Lavio extra thick 4 inch memory foam mattress topper is designed for king size beds, providing instant pressure relief and enhanced comfort without replacing your mattress. Featuring a dual-layer construction with 2 inch cooling gel memory foam and 2 inch bamboo charcoal memory foam, it helps regulate temperature while delivering balanced support. The non-slip base and adjustable elastic corner straps keep the topper securely in place, and the breathable knitted fabric cover is removable and machine washable for easy care and daily hygiene. - Lavio 4 Inch Mattress Topper King Cooling Memory Foam Pressure Relief in White