The Blackburn Outpost Frame Bag is the perfect bag to fit smaller frames for a week-long adventure or an all-day pleasure ride. This bag has an expandable bottom compartment that accommodates more mission-critical gear. Blackburn has carefully considered what is put in each bag and has tailored the compartments, pockets and other features to make sure there is a perfect place for everything including an adjustable mounting system to fit almost any bike. This bag expands to accommodate your needs and its coated 210 ripstop nylon and polyurethane zippers, provide extra protection and water resistance. The Blackburn Outpost frame bag will be ready for each and every adventure.