ECOFRIENDS garment, contains sustainable cotton Long sleeved One-Piece for newborn. Snap button closure at crotch for easy putting on and taking off. Large sizes (from 6-9 to 18 months) will not have this opening. Zip fastening. For this item, the larger sizes (from 6-9 months to 18 months) will not have feet. This is to allow better mobility and more comfort.