What Our Gearhead® Experts Are Saying: "I used the Zulo 2L on a handful of winter fat bike rides and Nordic ski days. This thing hugs my hips and never bounces, even when I’m moving fast. The insulated tube is a game-changer in cold temps, and it’s easy to stay fueled with those stash pockets."Cold temps shouldn’t keep us from crushing winter laps, and with the USWE Zulo 2L Winter Hydration Waist Pack, we stay hydrated and mobile all season long. Built for endurance athletes and backcountry enthusiasts, this waist pack delivers an ultra-secure, bounce-free fit thanks to its ergonomic banana-shaped design and single-buckle strap. The included 1. 0L Hydrapak Elite bladder connects via Plug-N-Play and routes through an insulated drink tube with a magnetic clip, keeping fluids from freezing even in deep winter sessions. Whether we're skate skiing, snow biking, or training for a marathon on rollers, the quick-stash pockets give us fast access to snacks, gels, and essentials. Comfortable, low-profile, and dialed for motion, this is a hydration pack built to move with us.