The ultra-lightweight design, including a 1.5L fluid system and an additional magnetic fastening on one of the 2 chest straps, makes the Hydration Vest a loyal companion during long workouts or excursions. 4 front pockets (with and without drawstring) offer space for countless accessories such as a drink bottle, gel or similar accessories. In addition, the back of the Hydration Vest offers a front mesh, 4 extra compartments and light-reflecting elements for your safety in dark training conditions.