The Optimum Nutrition Compartment Shaker provides a 600ml capacity complete with two storage compartments. Perfect for keeping your Pre and Post Workout Powders separate and dry. In addition, this Shaker comes with a Spidermix technology to effortlessly blend your choice of powder from Gold Standard Whey to Amino Energy. Available in Jet Black with the Optimum Nutrition logo embossed in White on one side with a matching White Flip-Top Cap. Additional features include a leak-proof, screw-top lid. The Shaker is BPA Free.