Trail riding is easy: just take a bike, add a rider, and air up the tires. If you're missing any of these elements, a ride turns into a hike (or a bike just lying on the side of a trail, in the case of a missing rider), so protect against a sudden loss of tire pressure with the Blackburn Mountain AnyValve Mini Pump. The Mountain AnyValve is small enough to mount on a frame with the included hardware but substantial enough to re-inflate the spirits of depressed tires. Since it's equipped with Blackburn's Presta/Schrader/Dunlop AnyValve pump head, the pump's salubrious powers are also already compatible with your valves.