Dog Park Flannel Fitted Crib Sheet (Pets). Make bedtime a howling goodtime with Trend Lab’s Dog Park Deluxe Flannel Crib Sheet. Our Dog Park Deluxe Flannel Crib Sheet features a sketched multi-breed puppy print with dog houses and bones. Additional blankets, burp cloths, and bibs by Trend Lab are available and sold separately. Features a sketched puppy print 100% Cotton Deluxe Flannel Fits standard crib mattress 28 in x 52 in Machine wash cold with like colors, gentle cycle. Do not bleach. Tumble dry low or line dry. Do not iron. Do not dry clean.