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For serious athletes, an all-in-one protein shaker and storage system. The Blender Bottle Prostak V2 shaker combines a leak-proof shaker bottle with interlocking storage containers, making it easier than ever to transport nutrition and supplements on the go. The bottle features an updated ProSeries lid with a SpoutGuard that protects the drinking surface from germs, a secure flip cap, and a large carry loop for easy portability. The powerful mixing system combines even the thickest ingredients for smoothies, protein shakes, and meal replacements using the exclusive Blender Ball wire whisk found only in Blender Bottle brand shakers.