Binder features include:

10 slots for holding things such as business cards or certification cards, 3 pen holders, pocket with flap for holding tools and a variety of other stuff you cant live without, keychain hook and pocket in back thats great for holding your dive table, Nitrox table, Wheel, or other important stuff.

Made of heavy duty Cordura material with zipper to hold everything securely. 3-ring binder style accepts PADI Adventure log book or any regular 3-ring style refills.