This is an amazing bag. You can take modules off to make it appropriate for your current mission, or keep them all together for maximum load.
Designed primarily for aviators who need a Pilot Flight Bag to pack multiple overnight items, such as clothes, shoes, coolers, etc., the B18 HANGAR fits the bill when maximum space is required. Also excellent for those in the Law Enforcement and Emergency Medical field.
The B18 is 13.5" x 10.5" x 22" with interior storage capacity of 18 inches. (And remember, it is a soft bag so it can expand slightly in every direction.)
Keep in mind that the modules included in the B18 can be assembled in any order. You can also remove modules and reassemble the remaining modules into a smaller bag. Or can combine other FLEX System modules. Any FLEX System module can be zipped onto any other FLEX System module.