ADV SKIN 5 SETSupport, stability and enveloping fit in an all round hydration hero. Our best selling hydration vest is back with a new design for enhanced stability, fit & versatility. Finetuned for demanding endurance races and runners, the Adv Skin 5 ensures easy access to hydration, long distance comfort and freedom of movement. With 5 liter capacity ideal for marathon trail races and adventures up to 60km.