strainer system combined with superpowers like glasslike odor stain resistant plastic, rounded base, and unmatching heroic design. Features of Shieldmixer Hero Pro Superman Classic Leakproof cap designed for easier and more hygienic usage. The rounded bottom ensures better fluid circulation and prevents powder residue from settling making the bottle easier to clean. Trademarked Eastman Tritan plastic is extremely durable and made from glasslike polycarbonate material. It is scratch resistant, odor free and nontoxic.