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Introducing the Duo Double-Wall vacuum insulated tumbler, the ultimate drinkware for anyone who takes their beverages seriously. This tumbler is equipped with a clear screw-on lid and straw, plus a new black screw-on flip top hydrosport carabiner clip lid for added convenience. Not to mention, the vent hole provides a superior drinking experience, while the leakproof design ensures there won't be any spills. And to top it off, this tumbler is BPA-free, so you can enjoy your drinks without any harmful chemicals. Get your hands on this tumbler now and take your drinking game to the next level!