Designed to be lightweight, portable, and easy to use, the Spin Doctor MXE Mini-Pump will be your new best friend if you suffer a flat out on the trails. Designed for high volume mountain bike tires, the MXE features a large volume barrel for efficient and speedy inflation. The extractable hose ensures easier inflation while the mini-pump's reversible head easily converts for compatibility with Presta or Schrader valves.