evo.com | CamelBak Hydration Packs > The Circuit Run Vest 50oz combines function and comfort with 3D vent mesh that keeps air flowing even on your hottest miles. With secure storage for essentials like your phone and keys, adjustable sternum straps for that perfect fit, and a Crux(R) reservoir delivering steady hydration all day long, this vest gives you everything you need to explore new trails and push your boundaries. 3D Vent Mesh Engineered to maximize airflow and comfort throughout your run. Includes Crux 1.5L Reservoir with Quicklink System Secure Zippered Phone Pocket Recycled N70D Ripstop with C0 DWR 13.78 x 8.27 x 4.33 in / 35 x 21 x 11 cm | CamelBak Circuit Run Vest 50oz Hydration Pack 2026 - 50oz in Blue