GoLite new No Bounce™ bottle packs will rock your world, not your hips. Featuring the No Bounce™ load control system and ergonomic design that wraps the hips, the HydroSprint is great for training or longer trail runs. Offers a highly breathable quick-dry air mesh body, stretch mesh pockets, gel flask and includes two, 21 oz Specialized® water bottles. Pack Specs Volume: 0 in3 | Not Specified liters Hydration: 21oz/600ml Bottle Included Fabric Features Highly breathable quick-dry air mesh body