The Robots Play 4 Piece Baby Crib Bedding Set includes: quilt, dust ruffle, fitted sheet and diaper stacker. The quilt measures 45 inches x 36 inches. The dust ruffle has a 14 inch drop. The fitted sheet is designed to fit a standard size 28 inch x 52 inch crib mattress. The diaper stacker measures 12 inches x 19 inches, and is 8.5 inches deep. It hangs from 2 ties along the top, and features a side opening.