What Our Gearhead® Experts Are Saying:"I’ve used the Octane 25 for fast-paced ridge scrambles and long trail days. The breathable mesh keeps it cool, and I love how the hipbelt pockets and shoulder strap storage let me grab fuel or my phone without ever stopping. It’s got everything I need, plus space for poles and layers when the weather shifts."The Octane 25 Hydration Pack from CamelBak is built for high-energy hikes, long trail missions, and anything in between. We count on its smart storage layout and low-bulk hydration for keeping up with our fast-moving pace. With a 2-liter Crux™ reservoir and multiple external stash zones, this pack offers reliable, on-the-go access to fluids, layers, and trail snacks—no digging required. Designed to maximize comfort and efficiency, the Octane 25 includes breathable 3D mesh, dual sternum straps for bounce-free fit, and a ventilated hip belt that helps transfer load weight while adding storage. With 13 total exterior pockets, secure pole attachment, and Quick Stow™ compatibility, this pack blends hydration, access, and comfort into one trail-ready design. Whether you're chasing mileage or climbing ridgelines, this pack keeps pace—and then some.