The aerodynamic wedge shape lets these under seat bags slip easily through the wind while the internal pockets keep tools away from inner tubes and other delicate items.
The DX provides just the right amount of room for an MTB tube, patch kit, and a tool for mountain bike use
A great bag that is easily installed. The material is stiff, so it holds its shape and keeps a clean look. It doesn't hold very much, but the different compartments are handy to organize your things. It fits a multitool, tube, and Co2 inflator and extra cartridge. Not much else will fit. There is also a strap on the back to clip on a light. This bag is durable and will last a long time.