FITLY Soft Flask - 13.5 oz (400 ml) - Shrink As You Drink Pocket Soft Water Bottle for Hydration Pack/Running Vest- Folding Water Bottle for Running, Hiking, Cycling - Ski Water Bottles (FLASK400)

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....