Classic cotton gets a high-tech twist in the lightweight, durable Hyper Cotton Sheet Set. With the soft feel of cotton, plus the addition of fabric technology that helps air circulate, this set feels familiar while doing more temperature regulating than traditional covers can. Sets include 1 fitted sheet, 1 flat sheet, and 2 pillowcases. The king split set includes 2 twin XL fitted sheets, one king flat, and 2 pillow cases. Please note, consists of a single pillowcase for twin and twin XL sizes.