Introducing the Unisex Hypernight Quick Start 2.0 Hydration Pack by Nathan Sports, an essential addition to the QuickStart Series, perfect for both beginner and seasoned runners. Made in Hi Vis Yellow with a unique geo-reflective print, this pack ensures superior visibility in low-light conditions. Featuring a 1.5L hydration bladder, front storage for nutrition and large smartphones, and a pocket for up to 22oz flasks, its minimalist design offers comfort and functionality. With adjustable front and side straps, a soft perimeter binding to prevent chafing, and a main back zipper pocket, this 4L capacity pack weighs only 12.4oz with the bladder and 7.2oz without.