The USWE Outlander PRO is a superlight race hydration pack developed and designed for pro MTB athletes Henrique Avancini and Manuel Fumic. The pack is stripped down to go minimum on weight and to maximize the ventilation at the front using an ultralight mesh-membrane harness with fixed size to make this happen.Outlander PRO is a superlight race hydration pack developed and designed around pro mountain bike athletes originally. The pack is stripped off to go minimum on weight and to maximize the ventilation at the front.It's like wearing nothing at all.This pack has revolutionized what athletes experience when training and racing with a backpack. Before, it was all a gamble between comfort, unnecessary weight, and hassle. Now, the choice is clear with a pack that allows 2L of hydration but fits like a glove that truly doesn't bounce around.NDM harness technology for a bounce-free fit2.0L bladder includedWater resistant Phone Pocket at the back. Inner size: 8 - 16 cmItem SpecificationsBack ProtectionNoColorCool WhiteDefined ColorBlackGender/AgeUnisexReservoir IncludedYesReservoir Volume (fl oz)1.5Total Volume2Weight260 USWE Outlander Pro Hydration Packs UPC: 7350069253002