Staying hydrated at all times is key especially on longer distances. Designed for road runners and trail runners to get a quick and convenient access to water on the go, the 300ml Ergo flask comes with a long tube option so you can drink easily without effort from your backpack. The Ergo flask will fit easily in your backpack pocket or running belt. With its wide opening, it is easy to refill. The nozzle is easy to open and close. Safe and durable, the flask is BPA free. The soft flask is the perfect solution to comfortably and efficiently carry your water. No heavy or bulky bottle, you stay light. Its soft material is easy to grab even with humid, cold hands.