Rene Rofe Baby Baby Girls' Spring Floral 2 Piece Sundress Set with Diaper Cover Dress: 60% Cotton, 40% Polyester; Diaper Cover: 100% Cotton Imported Machine Wash Dress: 60 percent cotton 40 percent polyester, diaper cover: 100 percent cotton Rear snap neck opening Elastic waist diaper cover Tag less neck label Machine wash cold with like colors. Use only non-chlorine bleach when needed. Tumble dry low