A baby bodysuit—also known as a onesie—is a piece of clothing designed specifically for babies to wear alone or as a top that can be paired with bottoms. Baby boy bodysuits typically feature snaps, zippers, or buttons for easy diaper changes. The top of most baby boy bodysuits looks similar to a T-shirt, with short leaves and a crew neck, but they can also feature long sleeves and built-in pants, like a romper. Most onesies are made from breathable, easy-to-clean fabrics like cotton. Some baby bodysuits feature stretchable collars and leg holes to help ensure your baby won’t get tangled or uncomfortable in their clothing while they sleep, explore, and play.
