Pura is the first and only juvenile bottle provider to ship its bottles with a 100% plastic-free silicone travel nipple/spout travel cover. This revolutionary design not only eliminates plastic components but provides much improved functionality as it does not "pop" off the bottle when jostled about in a bag. Also in accordance with re-purposing philosophy, the travel caver can also be used as a plastic-free snack cup for toddlers in a stroller, pram or car seat!