![My water bottle has numbers and a piece that can be moved to each number. It doesn't seem to DO anything though. What's it for? : r/whatisthisthing My water bottle has numbers and a piece that can be moved to each number. It doesn't seem to DO anything though. What's it for? : r/whatisthisthing](https://preview.redd.it/01gzvn9j0ha21.jpg?width=640&crop=smart&auto=webp&s=c05645a7827dcb45a803fd384a053560555e4798)
My water bottle has numbers and a piece that can be moved to each number. It doesn't seem to DO anything though. What's it for? : r/whatisthisthing
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Thermos Kids Non-Licensed Stainless Steel Funtainer Hydration Bottle Assortment Assorted | Walgreens
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Amazon.com: Thermos Intak 24 Ounce Hydration Bottle with Meter, Green: Sports Water Bottles: Home & Kitchen
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Custom 32 40 oz Stainless Steel Thermal Water Bottle with Straw Lid Vacuum Hydroes Thermos Cup Insulated Flask Outdoor 1000ml - AliExpress
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Amazon.com: Thermos Nissan Intak Hydration Water Bottle with Meter, Blue: Sports Water Bottles: Home & Kitchen
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