Our best-selling Hotel Collection pillowcase is woven from premium, American-grown Supima Cotton. The 680 Thread Count Bedding Collection offers superior quality and an exceptionally soft feel. The simplicity of our hemstitch details offers a modern style for any bedroom. two king pillowcases (20" x 36") Thread count: 680 Supima is American Grown extra long staple cotton Supima is rare, representing only 1% of the world's cotton Superior quality, strength, durability, and rich long-lasting color Supima cotton Machine Washable