What Our Gearhead(R) Experts Are Saying: "This version of the Race 2. 0 is wild-crazy light, insanely breathable, and the NDM PRO harness locks it down better than anything I've raced in. The insulated bladder sleeve is a huge bonus on hot days, and airflow through the mesh backplate is the best I've felt. For XC or gravel racing, it's a legit advantage." We choose the USWE Race 2. 0 XS Hydration Pack when we want every watt, every breath, and every gram working in our favor. Purpose-built for racing, this pack uses an ultralight mesh-membrane backplate and fixed harness to maximize ventilation while minimizing weight. The updated NDM 1. 0 PRO harness keeps the pack absolutely locked in place-no bounce, no sway-so we can hammer the pedals, dig through climbs, or sprint for the line without losing efficiency. A 2. 0-liter Elite Hydration Bladder sits at the heart of the system, paired with an insulated sleeve that helps keep water cool during blistering race conditions. Breathable 3D mesh, silicone stability printing, and a recycled ocean-plastic main fabric make the pack both environmentally conscious and performance-driven. With proven aerodynamic shaping and a feathery 230-gram build, it's a go-fast essential for riders who want uncompromising speed and comfort.