High Strength Natural Bamboo Fiber Yarns Egyptian Comfort 1800 Thread Count 4 Piece KING Size Sheet Set, BLUE Color Includes: 1 flat sheet (102"x105"), 1 fitted sheet (78"x80"), 2 pillowcase(20"x40") Long-lasting and breathable microfiber (polyester) material Oversized for better coverage on today's deeper mattresses Deep pockets that fit extra thick up to 15 inch mattress Wrinkle-free, high strength micro fiber yarns will stay soft for years