Camelbak Waterbottle
Everyone knows that they should be drinking more water, having some nearby should hopefully remind you to have a drink. By using a water bottle it lets you know how much you had been drinking.
This bottle has a straw goes to the bottom so you can drink from the bottle when it is upright without having to lift it up. It is also tall enough that I can drink from it when it is sitting on my table.
It has a handy loop to hang it up and you can close the nozzle quickly if you want to throw it in your bag.
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