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 flas h shoulder strap adjustment and mesh back vaude cluster 10l 3l hydration pack featuresexpansion 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 reflect