Fill up the included 2. 5-liter Hydraulics reservoir, grab a windbreaker and some snacks, and take our enduro bike out for a rip with the Osprey Syncro 5L Backpack. This streamlined hydration pack has just enough room for the essentials and is fitted with a front tool organizer (not that anything on our bike would ever break). A LidLock helmet attachment comes in handy when we're out of the saddle, and the integrated rain cover is especially convenient when that light wisp of clouds over yonder quickly turns into a menacing thunderstorm.