Introducing the Unisex Quickstart 2.0 4 Liter Hydration Pack by Nathan Sports, designed for optimal performance and comfort. This sleek black and gold pack features breathable mesh shoulder straps and adjustable sternum straps, ensuring a secure fit. Crafted from a 60% Nylon, 40% Polyester blend, it includes a 1.5 L hydration bladder and offers ample storage with a 244 cu in/4 L capacity. Additional highlights include a front zippered phone pocket, a bottle pocket, reflective hits for visibility, and a main back zipper pocket for organization.