ADV Skin 5 Gradient Hydration Vest UnisexCombining enhanced stability, fit & versatility, the unisex Adv Skin 5 Gradient Hydration Vest gives Salomon's best selling hydration vest a new look with sublimated graphics. Fine tuned for demanding endurance races & runners, it provides easy access to hydration, long distance comfort & freedom of movement. 5 liter capacity for marathon trail races & adventures up to 60km. Material Back body: 100% Polyester; Back insert: 86% Polyester, 14% Elastane;