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What is Optimum Nutrition On Logo Shaker Black 600ml The Optimum Nutrition Shaker provides a 600ml capacity complete with stainless steel mixing ball 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 BDPA and DEHP Free. What are the key features 600ml Capacity Stainless Steel Mixing Ball BDPA DEHP Free Leak-Proof, Screw-Top Lid