Great First birthday gift idea for your baby. One year old cute onesie. Premium quality, short sleeve baby onesie. 100% combed-cotton (preshrunk,) machine washable, cozy one-piece for your baby! overlapping expandable shoulders and three-snap closure at the bottom to make changing as smooth and easy as possible. Available in a wide variety of sizes and colors - choose the size and color options from the drop-down list. If you would like more room please order a size up.