Lifefactory’s reusable bottle system is made for the years ahead. As your little one graduates from “cradle to kiddo”, they will love drinking from this pivot straw cap at any angle (for ages 12+ months). The straw is ergonomically designed to fold down into the lid and includes a hygienic cap. our vented sippy caps quickly convert a baby bottle to a sippy bottle. Function meets freedom with our wide neck vacuum insulated stainless steel system with easy-to-change caps designed to keep up as your little one grows.