Nathan QuickStart 4L (1,5 L Bladder) Unisex Backpack blue

FUNCTIONAL QuickStart is equipped with a 1.5L hydration bladder, 2 front storage pockets with one zippered pocket for phone, keys and other valuables. One front pocket fits a 22oz flask. The main back zippered pocket is for extra layers and other running essentials. FIT One size fits most, with adjustable front and side straps for dialing in a perfect fit. Vest fit is snug and overall sizing tends to run slightly on the smaller side, so it is recommended that anyone on the higher end of a given size may want to size up MEN or WOMEN Select between the blue/grey or black vest. Designed and built for everyone. Soft perimeter binding prevents chafing. DESIGN Lightweight and comfortable mesh material that wicks away sweat and water. No bounce, No chafe binding, Reflective visibility. For running, hiking, walking, ridding etc. SPECS Weight without bladder: 5.5oz. Weight with bladder: 9.5oz. Storage capacity: 4 Liters (244 cu in). Comes with 1.5L hydration bladder.