Made from naturally soft organic cotton and woven with a timeless check motif, Ralph Lauren’s tattersall sheeting upholds the premium construction and unmatched comfort of a finely tailored men’s dress shirt. The OEKO-TEX® Standard 100 certification ensures it has been tested for harmful substances. 400-thread-count organic cotton. Flat sheet and pillowcase have a 5" self-cuff with double-needle topstitching between the body and the cuff. OEKO-TEX® Standard 100 certified. King flat sheet: 108" L x 114" W. King fitted sheet: 18" pocket depth; 80" L x 78" W. California king fitted sheet: 18" pocket depth; 84" L x 72" W.