On rides where you don't need to bring much, throw on the CamelBak Men's Hydrobak Light pack. Built to carry only the essentials and a light layer, this pack is so lightweight, you might even forget you're wearing it. The 3D vent mesh back panel and ventilated harness work together to keep your back cool, and the Crux reservoir keeps you hydrated on the trail. With adjustable sternum straps, helmet carry, and reflective elements, no detail was overlooked in the Hydrobak Light Pack. Durable materials make this pack long lasting Secure zippered pocket keeps the essentials secure Ventilated harness keeps you cool Spring/summer 2021 Equipped With 3D Mesh 3D Mesh is a lightweight, cushioned mesh that maximizes airflow and reduces chafing for cooler, more comfortable activity. Crux Reservoir Crux Reservoir is a polyurethane bladder equipped with a leak-proof cap, on/off lever, self-sealing Big Bite Valve, and bacteria-inhibiting Hydroguard technology.