This personal cooling pad is perfect for those who sleep hot and is designed for use below your bottom sheet but above a mattress protector to provide superior cooling. Products with REACTEX technology feature pressure-activated cooling in approximately 8 seconds as heat is pulled away from the sleeping surface and stored away from the body to help skin temperature reach and maintain the optimal range for sleep. The REACTEX technology in this product is self-recharging during non-use to be ready for the next night’s sleep. This cooling pad allows for individual comfort unlike other products like cooling mattress protectors or full-sized mattress pads that are sized for use on the entire mattress and alter the climate for all sleepers. The stain resistant fabric cover consists of premium 233 thread count, natural cotton designed for optimal softness and breathability to support the REACTEX cooling system, while the non-skid bottom ensures it stays in place during use.