The main compartment is designed to hold 2 to 3 DSLR camera bodies + up to 8 lenses (space for up to 500mm but with tripod mount dismantled) + flash + many other accessories. Use the modular Aeriform Dividers and Cocoon Pouches to custom fit your exact gear needs. Access to the main compartment can be from top, bottom or any other point so if you need to get to one specific item you do not have to open the entire bag and expose its content to prying eyes.