Martha Stewart Collection Solid Flannel Twin Sheet Set (Twin, Holiday Red) 100% Cotton Flannel Imported 3 Piece set includes 1 flat sheet, 1 fitted sheet, 1 standard pillowcase. 100% cotton flannel - brushed and napped for a soft and inviting feel. This velvety surface helps to keep you warm and cozy throughout cold wintery nights. Fitted sheet fits mattresses up to 16" deep Machine washable - wash before first use for more softness.