Made with innovative cooling technology, BEDGEAR's Hyper-Cotton Performance sheet set is designed for flexibility, durability and comfort. Hyper-Cotton material allows more airflow to your bed when compared to traditional 100% cotton sheets, allowing your body to achieve optimal temperature regulation. The seamless fitted sheet creates a smooth sleep surface and long-lasting construction, so you don't have to worry about ripped seams. A fitted sheet Powerband ensures the most secure fit and grip on your mattress and works great with adjustable bases. Ideal for all seasons, Hyper-Cotton sheets have a fast-dry technology that quickly evaporates moisture. 60% Cotton, 40% Rayon