Our wide neck borosilicate glass baby bottle is designed to grow alongside your little one. With a variety of nipple sizes and sippy caps our bottle adapts to your baby's changing needs. The 8 oz. bottle comes with a silicone sleeve, polypropylene cap, ring, stopper, and a Stage 2 (6-9 months) silicone nipple that enhances feeding by providing a more natural experience. The wide neck makes it easy to fill and clean while the silicone grip makes it easy to grip and easy to love.