The best gym water bottle for 2025 for every indoor or outdoor workout, tested and approved by a run coach No matter your workout, these are the bottles you should grab to help keep you hydrated.

Here, the Corkcicle Crossbody Water Bottle Sling Bag holds a 32-ounce Owala water bottle. Not pictured but in the pocket: an iPhone, car keys, a small wallet, and a Kindle Paperwhite.