Linenspa 2 Inch Egg Crate Gel Infused Foam Mattress Topper - King Size A cost-effective way to enhance your mattress or soften the surface of a mattress that's too firm Sculpted foam is infused with gel beads to capture and distribute body heat to prevent overheating Convoluted shape improves airflow and breathability Reversible design lets you choose the plusher convoluted side or firmer flat side based on your preferences King size mattress topper measurements are 76" x 80"; 3 year warranty