The soft flask 150 ml is made for athletes who want a tiny, flexible bottle for water, electrolytes or diluted gels. It compresses as you drink so it takes almost no space in a race belt or vest pocket. Use the bite valve for controlled sips without spills. BPA free and PVC free construction keeps it light for triathlon, road races and speed workouts. A smart mini soft bottle for runners who want just enough fluid close at hand without extra bulk.