Child's one-piece is a term used to describe a type of clothing for young children. It is also known as a romper, which is a one-piece garment that covers the torso and legs. It usually has short or long sleeves, and may have snaps, buttons, or zippers at the crotch for easy diaper changes. Romper suits are often made from soft, comfortable fabrics such as cotton, and come in a variety of colors and patterns. They are popular among parents and caregivers because they are easy to put on and take off, and can be worn both indoors and outdoors.