The Avengers won't let the forces of evil win, and they certainly will protect any young Marvel fan when it comes to bedtime. This twin sheet set included 1 fitted sheet, 1 flat sheet, and 1 pillowcase. Measures: Flat sheet - 96" x 66", fitted sheet - 75" x 39", pillowcase - 20" x 30". It fits up to a 10" mattress. Consists of 100% polyester. Machine wash cold and tumble dry low.