Deluxe Flannel Fitted Crib Sheets are cozy and stylish. Our Happy Penguins Flannel Crib Sheet features a penguins, igloo and snowflake print in grays, orchid and light blue with pops of yellow. This soft 100% cotton flannel crib sheet has 10-inch deep pockets and full-length elastic offering a more secure fit on standard 28 inch x 52 inch crib mattresses. Machine washable. Additional colors, prints and deluxe flannel products from Trend Lab are sold separately.