Illustrated with love by Swantje Hinrichsen, this gorgeous crib sheet invites your tiny dreamer to RSVP to the sleepiest party tonight. Designed to fit US standard crib mattresses 52 x 28 inches. Made with soft 100% cotton sateen, 230 thread count. Each sheet is beautifully packaged to make a unique baby shower gift. ***Note: Our shipping cartons hold 10 units each, which can contain a mix of styles. Please make sure your total Rookie Humans order is divisible by 10 to accommodate this.