Material: 100% cotton, skin-friendly, soft, comfortable and breathable. Collarband design: prevent zipper scratches protect baby's delicate skin. Zipper design: 2 way zipper design, easy to wear and change a diaper. Suitable for sleep, play, home, photo, holidays, present, and more. Please CHECK the Size Information in Description Before Placing Order Toddler Baby Boys Girls One Piece Pajamas Cotton 2 Way Zipper Printing Short Sleeve Footless Romper Sleep and Play 3 Months-4 Years