The specialized big mouth 2nd generation bottle delivers a burst of hydration in an easy to transport form with a design that promotes ease and effectiveness ergonomically crafted from bpa free plastic with cpsc approved ink and bottle materials this specialized water bottle ensures that all you taste is what yoursquove put in it the big mouth 2nd generation features a wider water channel for greater flow in a leak free construction that is simple and easy to use on the go the design and m