You and your little one will love this sippy bottle! Easy to drink, easy to hold, easy to clean - and water, milk or juice will stay cold for hours. The Insulated Sippy is made with two layers of vacuum sealed #304 food grade stainless steel – no BPA, no phthalates, no liner. The bottle has only a few parts, with an integrated handle and neck that accommodates a ring and Nuk spout. Eco Vessel have done their best to offer a simple, yet colorful sippy cup that will not leak with ordinary use and will make your hectic life easier.