Introducing the Unisex Vaporair 3.0 7 Liter Hydration Pack by Nathan Sports, designed for ultimate comfort and performance. This pack features an Adaptive-Fit Adjustable Sizing System, accommodating sizes up to 3XL, and is equipped with a 2L hydration bladder with a quick-release valve. The two-layer moisture-wicking air mesh and contoured Chimney back panel ensure breathability and comfort, while reflective hits enhance visibility. Weighing 13.0oz with the bladder and 8.8oz without, this pack offers practical storage including zippered and extended kangaroo pockets, fitting bottles up to 22oz.