Vaude Cluster 10L + 3L Hydration PackAll you need, right where you need it. A backpack with a full line-up of essential features for a small tour. Count on a perfect fit and reliable ventilation with our F.L.A.S H. shoulder strap adjustment and mesh back. Vaude Cluster 10L 3L Hydration Pack Features:Expansion bellows. Helmet holder. Side mesh pockets. Padded hip belt with pocket. Sternum strap. Opening for hydration system. Safety light attachment. Front outer pocket with mesh organizer. Reflective elements. Room for 3L hydration pack3L Bladder Not IncludedBuy Vaude Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.