The Small Explorer is designed to hold 2 of your medium or small lenses inside, with a flash and other small gear in exterior pockets. Comes with 1 removable divider.
The Large Explorer is designed to hold your 70-200 f/2.8 and 2 medium lenses, with a flash and other small gear in exterior pockets. Comes with 2 removable dividers.
Explorer Small 7" tall x 6.5" wide x 4.5" deep
Explorer Large 10" tall x 9" wide x 5" deep