We hand-picked this because: this is the only filtering water bottle on the planet that allows use of additives with the purified water.
If you prefer the taste of bottled water, but hate the cost and waste of plastic bottles, then it’s time to get FIT! With Filter Isolation Technology (FIT), you can filter water from drinking fountains, faucets, and other tap water sources through their patented system for a refreshing taste of hydration. Since this is the only system that filters water as you fill the bottle rather than forcing water through a filtering straw, this product allows you to safety use any thirst-quenching drink mix with its freshly purified water. From sports drinks to baby formula, FIT Bottles allow you to create the drink of your choice with freshly filtered water.
About FIT Top Bottle
FIT stands for “Filter Isolation Technology” and is the only patented filtering water bottle that allows use of a drink additive.