This innovative mattress topper features FIVE ZONES of firmness to provide specific levels of support for different areas of your body. From light support under your head and feet, to medium support for your shoulders and thighs and firm support under your lower back and buttocks. Sleeping at an optimal temperature is proven to promote a restful night's sleep, and cooling technology can help you find your sweet spot (even when the weather heats up). Gel Infused foam is ultra breathable, allowing heat from your body to dissipate instead of making you hot and bothered. The mattress toppers unique integrated Gel balls are designed to reduce your temperature for a fresher, cooler and comfier sleep. Your mattress is an expensive investment so why not protect it.