Our Kid Kanteen stainless steel kids water bottles and baby bottles are made with safe, BPA-free materials and designed specifically for kids. We have a reusable bottle solution for babies, toddlers, little kids and big kids, designed for easy transition as kids grow up. All our classic caps fit our classic bottles, so it is easy to go from sippy to sport to leak proof loop cap. Our baby bottles can transition to snack canisters with the use of any of our wide caps.