Skin-Freindly and Lightweight：Baby romper is made from 97% Rayon deliveried from viscose and 3% Spandex.The fabric is Buttery Soft, hypoallergenic, and moisture-wicking. Stretchy to conform to baby's body. Dual Zipper for easy diaper changes. Stretchable fabric allows for a looser or snug fit. Recommended for machine wash in cold water with a detergent; Hang dry. This baby pajamas can not only be worn while the baby is sleeping, but also suitable for crawling and playing at home. Comfortable fabrics and excellent design will bring a good experience to babies. Ekkimy Long Sleeve Baby Footies Bamboo Rayon Romper Infant Double Zipper One-Piece Clothes Boys Girls Outfits