This lightweight panel-loading Gregory Stimulus daypack is built for short-course adventure races, endurance events or just the everyday athlete on a long trail run. G Fabric is a high-tenacity nylon fabric impregnated with silicone so its fibers stretch under pressure instead of locking together and tearing. Pack has a front zippered pocket and a front mesh pocket for storing water bottles, jacket and energy food. Right at your fingertips, mesh zippered pockets on hipbelt are great for stashing energy bars or gels. Front bungee cord allows you to lash on and carry various technical gear and accessories. Yoke-style harness with sternum/chest strap and a low-profile minimalist waistbelt wrap around your body, securely keeping pack situated. Aero-Tech mesh on back panel helps move moisture away to keep you dry. Hydration sleeve with dual exit ports holds a reservoir sold separately for hands-free hydration on the trail. Reflective tape improves visibility in low light. Closeout.