- CUSTOMIZED FITLY SOFT FLASK INTEGRATION: Your ultimate companion for staying hydrated during runs, trail running, marathons, hikes, workouts, and intense activities. Our handheld water bottle for running has been tailored exclusively for Fitly Flasks (F1, F2, F3, F4, F3LFG), ensuring a snug fit and eliminating unnecessary bulkiness. With the included F3LFG 300ml (10 oz) flask and the option to swap with other FITLY flasks, you have versatile hydration solutions at your fingertips.
FITLY Flasks are ideal for quick drinks on the run. Gobble up a gel, wet a dry throat, or re-hydrate. Designed to be used while running or biking. Stores directly in your front, side, or back pockets. FITLY Flasks shrink as you drink so nothing ever moves, bounces or rattles.
