At Thermos, choosing the best available materials is important to us. Our plastic Foogo® phases drinkware is made with BPA-free Eastman Tritan copolyester, which is impact-resistant, dishwasher durable, exceptionally clear and won t absorb or impact any flavors or odors to its liquid contents. FEATURES: BPA-free, unbreakable, stainless steel interior and exterior. Leak-proof valve prevents messes and is easy to clean. Ergonomic handles are removeable. Dishwasher safe. Foogo Phases interchangeable lid system. Capacity: 8 oz/230 ml.