Our wide neck stainless steel vacuum insulated baby bottle is designed to grow alongside your little one while keeping their drinks cold (1 hr limit for milk). The 8oz bottle comes with a silicone sleeve, polypropylene cap, ring, stopper, and a Stage 2 (6-9 months) silicone nipple. The wide neck makes it easy to fill and clean while the silicone sleeve makes it easy to grip and easy to love.