The Iris 3 Piece Twin Sheet Set includes a flat sheet, fitted sheet and pillow case. The flat sheet measures 96 inches x 66 inches. The fitted sheet is made to fit a standard size 39 inch x 75 inch twin mattress. The pillowcase is 32 inches x 21 inches. The flat sheet and pillow case are made of 65% polyester and 35% cotton. The fitted sheet is 100% cotton. Care instructions: machine wash cold separately, do NOT bleach, tumble dry low and remove promptly, iron on low when needed.