Unique Blend: Made of 54% Cotton and 40% polyester and 6% Modal. With this unique blend, these sheets combines values of the three materials and provides extra softness and comfort. The unique blend of cotton, polyester and modal keeps it warm during winters and cool in summers. Intricate Details: The 1250 thread count, solid sateen weave creates cool, breathable feel. Double needle stitch makes it more durable. Broad all over stitched elastic inside the fitted sheet makes it snug tightly to the mattress. 16 in Deep pocket can fit on the large mattress as well. Wash Care: Machine wash in cold water only. Delicate cycle. No Bleach. Tumble Dry on low heat. Remove immediately after spinning. Press with warm iron if needed. Satisfaction Guarantee: If this triblend sheet set does not completely meet your expectations, please return it for an immediate and full refund. Any questions, please feel free to contact us.