The Camelbak Rogue Hydration Bag offers the convenience of external filling in a compact design. It features a 2.5L Crux reservoir that can be easily refilled through a quick-release flap on the front. The bag includes two external pockets for essentials like keys, wallet, or phone, and has reflective accents for visibility during early morning or evening rides. This lightweight hydration bag is designed to keep you agile on the trails while providing ample water supply.