Inspired by professional athletes, the ACTIVE HYDRA VEST 8 offers an ease of hydration and more freedom of movement It is designed with soft fabrics and an easy elastic closure system for more comfort, regardless of the intensity of training or running. Stability/freedom of movement. The construction uses stretch, breathable fabrics that conform to the body, and lightweight adjustments for fit and stability. This innovative sternum strap construction allows you to adjust and connect your pack quickly, even on the fly. The elastic strap also allows easy breathing during intense activity. Designed to fit Salomon soft flasks, these front pockets limit bouncing ( 2 x 500ml included) The pack doesn't bounce but allows comfortable breathing. The integrated soft flasks make it easy to drink as soon as you feel thirsty. A pack that lets you do more than one thing: take along extra gear like flasks, poles, and a helmet. Front storage makes for quicker hydration and access to gels The multiple pockets and compartments allow you to store all your items you need during your training. Freedom of movement Quick access to hydration Pockets and compartments