Skip the sippy cup and move straight to the "big-kids" cup, Marcus & Marcus' Tritan Straw Bottle will help make the transition easier. Our handy bottle is made with BPA and phthalate-free plastics that is lightweight and durable. It features a sliding lid and a pop-up silicone straw. The Marcus & Marcus Tritan Straw Bottle is leak-proof and shatter resistant. The Bottle includes a two-stage system to grow with your little one. Stage 1 includes two detachable handles that are easy for little hands to hold. Stage 2 includes an optional strap so your growing toddler can carry their bottle and stay hydrated all day.