HydraQuiver Double Barrel Hydration Pack Color:Black Sigma One is both the

Sigma One is both the lightest and most aerodynamic stem in TriRig's lineup

A rider at 6'2" and 177 pounds found the XL tight at 188 pounds

XS – 52-54

water-resistant fabricSheds mud and light rain while wicking moisture to keep you cool and dry

With cutting-edge upgrades like hydraulic suspension

HydraQuiver Double Barrel Hydration Pack Color:Black Sigma One is both theHydraQuiver Double Barrel: Max Hydration, Zero Bounce Conquer ultra distances with the HydraQuiver Double Barrel, Orange Mud's premier hydration pack for serious runners. Engineered for no bounce, no slosh stability, it delivers massive fluid capacity and smart storage, keeping you focused and fully fueled on the longest, toughest runs. Unrivaled Stability & Dual Hydration The Double Barrel's innovative design securely carries two standard bottles