Disney Finding Nemo Twin Sheet Set One twin flat bed sheet, finished size 66 x 96 inches (168 x 244 cm) One twin fitted sheet Both of the above fit a standard twin mattress of 39 x 75 inches (99 x 191 cm) One standard Pillowcase, finished size 20 x 30 inches (51 x 76 cm) to fit 20 x 26 inches (51 x 66 cm) 60% Cotton & 40% Polyester