Closer to Nature's award-winning BPA-free baby bottles are inspired by what babies love most-mom. With the most breast-like nipple ever made, this bottle flexes like breast and feels like mom because babies prefer it that way. With guaranteed baby acceptance* and a super-sensitive anti-colic valve, it is the best thing for baby since you-making feeding easier for everyone. Helping you #ParentOn *92percent of 1200 parents who used our nipple recalled that their baby accepted it within the first 3 attempts **In a 2012 on-line survey of more than 500 moms who used our bottles, 97percent agreed Size: 5oz. Gender: unisex.