Together with Miss Grape, we developed the multi-purpose tool roll that keeps all your spare parts tight underneath your saddle. Simplicity is the key to this bag's design. Whether you carry a spare road tube or a 650B gravel tube, this bag fits it all. Due to it's size that easily adapts to what you need you can add in tire levers, a CO2 cartridge or even a small pump. Cordura fabric keeps it waterproof and the magnetic buckle makes it easy to attach and remove under the saddle. This is the bag your bike deserves. Specifications: - Waterproof X-PACK X10 fabric - Magnetic buckle - Can hold at least: one inner tube, 1 CO2 cartridge, 1 multitool & tire levers - Dimensions 27cm x 23cm