These 310 Thread Count Sheets have an amazingly silky smooth feel. The 100% extra-long-staple Pima Cotton uses a single-ply thread for an authentic 310 thread count. The authentic Sateen weave is both beautiful and strong, while the lockstitch construction ensures durability. The color-matching satin hem makes these sheets a beautiful choice. Set Includes: Pillow Case: 21" x 32" Flat Sheet: 70" x 108" Fitted Sheet: 39" x 81" - fits up to 15" mattress