Twin size contains: one twin flat bed sheet, finished size 66 x 96 inches (168 x 244 cm). One twin fitted sheet. Both of the above sheets fit a standard twin mattress of 39 x 75 inches. One standard pillowcase, finished size 20 x 30 inches (51 x 76 cm) to fit a 20 x 26 inch pillow. Full size contains: one full flat bed sheet, finished size 81 x 96 inches (206 x 244 cm). One full fitted sheet. Both of the above sheets fit a standard full mattress of 54 x 75 inches. Two standard pillowcases, each with finished size of 20 x 30 inches to fit 20 x 26 inch pillows.