Fitted sheet with 144 threads of 100% cotton. Yarn dyed cotton for lasting comfort and resistance to washing. Cotton fabric is transpirable, hypoallergenic with a soft touch. It provides a freshness in summer nights and warmth in cold nights. This product is Oeko-Tex 100 certified, proving that any harmful substances have been eliminated in the production process, it's safe for human health. Decorate your bed has never been so simple and practical. Combined with our BASICS collection of duvet covers, sheets, cushion covers and pillow covers.