Gel Full Size Memory Foam Mattress Topper, 2 Inch Thick Adaptive Support Smart Pressure Point Relief Ultra Breathable Design Cooling Technology 5 Year Market Leading Adaptive support, extreme sleep comfort with our innovative 4 inch king memory foam mattress topper Ultra breathable design, ultra-breathable comfort, specially designed to allow heat and humidity to flow away from the body Hypoallergenic, ensuring the topper always stays clean, cool and fresh for years