100% organic cotton. This special fabric is buttery soft This style always gets the rave reviews from parents! Our '2-way' double zippers allow for ultimate comfort and easier changes - zip down from the top for dressing, zip up from the bottom for changes, without exposing babies' tummy, and no pulling over the head. Features include inner zipper fabric backing and neck fold to protect baby's gentle skin. Always made with the very best GOTS certified organic cotton.