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16oz Shaker Bottle，Leak Proof Sports Shaker Cups for Protein Shakes，Shaker Bottle for Pre Workout and Travel To Go，BPA Free & Easy Clean Protein,Pink Garden Hose The weight difference results fromPremium Shaker Bottle: A gym essential for every workout. Shaker cups for protein shakes, smoothies, creatine, BCAAs, Amino Acids, powders, Great for pre workout, post workout and intra workout supplements Wide mouth amp; Double Scale Markit is easy to add mix scoops and liquids, and embossed markings measure both ounces and milliliter Leak ProofEngineered with a secure screw on lid and flip cap that snaps securely shut to keep contents contained to