4 Inch Memory Foam Mattress Topper for King Size Bed 76” X 80” X 4”: Embrace the power of restful sleep with our cooling mattress topper, which provides cool comfort and intuitive support for every sleep position and increases spine alignment. Temperature Regulation: Our king size mattress topper is infused with cooling gel that dissipates body heat, with a breathable, ventilated design that improves airflow. Adaptive Pressure Relief: This king mattress topper is made of premium memory foam that relieves pressure points and adapts to your body shape and sleep position, making it a great mattress topper for back pain relief. Upgrade Your Sleep Experience: Buying a new mattress can be costly. Our memory foam mattress toppers for king bed is the easy and affordable solution to rejuvenate your old mattress. From box to bed; place on top of your mattress and under your mattress cover. Our king size mattress topper combines the comfort of a pillow top mattress topper with the support of an extra firm mattress topper. Rest Easy: This king mattress topper is OEKO-Tex and CertiPUR-US certified to contain no harmful materials or components. Rolled in a box, this topper is compressed for easy transport and travel. Use for camping trips, college dorm room, RV, sleeper sofa, or use at home for a blissful sleep. Ships compressed to reduce our carbon footprint - please allow 24 hours for foam expansion and smell dissipation. Spot clean & air dry.