strainer system combined with superpowers like glasslike odor stain resistant plastic, rounded base, and unmatching heroic design. Features of Body Builder Shieldmixer Shaker Leak-proof cap designed for easier and more hygienic usage. Trademarked Eastman Tritan plastic is extremely durable and made from glass-like polycarbonate material. It is scratch-resistant, odor free, and non-toxic. The rounded bottom ensures better fluid circulation and prevents powder residue from settling making the bottle easier to clean.