Martha Stewart WHIM Collection 100% Cotton Sheet Set Size Twin 'I Love Paris" Twin 3-Piece Set includes: flat sheet, fitted sheet, and 1 standard pillowcase. Flat sheet dimensions: 70" x 98", Fitted sheet dimensions: 39" x 75" (fits mattresses up to 18"), Pillowcase dimensions: 20" x 30". Pillowcase with envelope closure. Made of soft and durable 200-thread count 100% cotton percale. Machine washable, sheets get softer and cozier with use.