Big Summit is a 24oz single wall Eastman Tritan™ water/sport bottle. Tritan is a tough, shatter-resistant, 100% BPA free polyester that can withstand sub-freezing and boiling temperatures. Comes with a twist-on lid that features a clear flip-up spout with sipper straw. We recommend that you hand-wash for optimal longevity. Indicate how you would like the name to appear on the water bottle and what color decal you would like!