What Our Gearhead(R) Experts Are Saying:"This vest strikes the perfect balance for long trail runs. The Crux reservoir keeps hydration effortless, and the vented mesh makes it super comfortable even on warm days. The storage is just right for snacks, essentials, and trekking poles-everything you need for exploring new trails."For runners who see every trail as an opportunity, the CamelBak Circuit Hydration Vest offers the perfect combination of hydration, comfort, and storage. Made with ultralight recycled materials, this vest keeps your load minimal while maximizing performance. The 1. 5L Crux(R) reservoir delivers steady hydration, and dual adjustable sternum straps ensure a secure, customized fit. Storage is tailored for the essentials, with dedicated pockets for fuel, gear, and a secure phone pocket for quick access. Trekking pole attachments and reflectivity add versatility and safety, while the breathable 3D vent mesh keeps you cool and comfortable over the miles. Whether you're chasing personal bests or exploring new heights, the Circuit vest is built to keep up.