Made of 100% cotton. Dr. Seuss Cat in the Hat design. 10-inch deep pockets, entire elastic opening. Machine-wash cold on gentle cycle. Dimensions: 52L x 28W inches. Have fun with your little one’s crib décor with the Trend Lab Dr. Seuss Cat in the Hat Flannel Crib Sheet. Fitted for standard crib mattresses, this crib sheet is made of 100% cotton and features a striking Dr. Seuss Cat in the Hat print that will have your little one rhyming in their sleep! For a more secure fit, an elastic band surrounds the entire opening of this sheet. Maintain the soft and coziness of this crib sheet by machine-washing cold on a gentle cycle.