Four liters of total capacity splits between a two-liter Crux reservoir and two liters of cargo space, which covers most trail rides without forcing you to carry the bulk of a larger pack. At 410 grams, it's light enough that you won't notice the weight on shorter rides but capable enough for longer sessions where you need to be self-sufficient with tools and layers. This is the middle ground between minimalist hydration-only packs and full day packs—you get enough room for essentials without hauling unnecessary volume that collects stuff you don't actually need on the trail.

The Air Support Light back panel uses body-mapped ventilation channels that let air circulate between the pack and your back without creating a sealed surface that traps heat. If you've finished a climb with your entire back drenched, you know why ventilation matters for comfort. The panel distributes weight across your spine without creating pressure points that become uncomfortable during extended riding. A ventilated harness spreads the load across your shoulders while maintaining airflow where straps contact your body. The adjustable sternum strap pulls the shoulder straps together for stability and prevents the pack from shifting when you're leaning through corners or navigating technical sections where you need the pack to move with you rather than against you.

Integrated tool organization inside the main compartment keeps tire levers, CO2 cartridges, and patch kits separated so you're not dumping your entire pack on the trail to find what you need for a flat repair. A secure zippered pocket provides separated storage for phone, keys, or wallet where they won't get scratched by tools or soaked if you stuff a damp layer in the main compartment. The bungee overflow system on the exterior handles layers you shed during climbs—you can stuff a windbreaker or arm warmers there when temperatures rise without opening the main compartment and letting everything else shift around inside.... Read More