Maternity Size 2-Way Short Sleeve Cotton One-Piece Pajamas [Before & After Childbirth] [Hospital Preparation] Color: Navy Made of 100% cotton for a comfortable feel, can be used as maternity wear and nursing wear. The one-piece design makes it ideal as hospital wear. The buttons at the crotch can be fastened to create a romper style, which was great for sleeping as the hem didn't ride up. The buttons on the sleeves also made it convenient for bathing and washing. I loved it so much that I bought different colors and wore them often, so please understand that there is some wear and tear. Other colors and long-sleeved types are also available.