Most mountain bike breakdowns are a result of one of the following: flat tire, broken chain, rear derailleur malfunction, gear cassette misalignment and operator error. You can easily fix all but the last one with the handful of small tools in this pouch and a little know-how, which you can find here. The small, pack-friendly tool kit includes a micro-pump, multi-tool, tire patch kit, tire levers, tire boot and pressure gauge. Throw it in your Osprey Zealot and leave it there until you need it. Which you will.
Price: $53.49 Buy: parktool.com to find an online or local retailer.