Bum bag or fanny pack – whatever you call it, when it's as clever as the VERTEX 3, it might solve all of your space problems in one. With its wide, padded hip belt and ventilated back system, this CUBE Hip Bag is perfect for safely transporting your ride essentials in comfort. It packs plenty of practical features into a small space: front pockets with compartments, mini pockets on the belt, elasticated side pockets... What's more: it's hydration system-compatible, too.