ADV Skin 12 Gradient Hydration Vest UnisexCombining enhanced stability, fit & versatility, the unisex Adv Skin 12 Gradient Hydration Vest gives Salomon's best selling hydration vest a new look with sublimated graphics. Fine tuned for demanding endurance races and runners, it provides easy access to hydration, long distance comfort and freedom of movement. With 12 liter capacity ideal for longer trails (60km+). Material Back body: 100% Polyester; Back insert: 86% Polyester, 14% Elastane; Body: