This 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 is paired with a pivot straw cap for easy drinking (for ages 12 months). The pivot straw cap is for upright sipping, the straw spout is designed to fold down into the lid. The wide neck makes it easy to fill and clean while the silicone grip makes it easy to grip and easy to love.