My inzer forever belt that I ordered for christmas just came in; it is the 10mm lever. Damn, this thing is a beast. I'm glad I opted for the 10mm instead of the 13. The lever thingy is pretty nice and it makes it pretty easy to get on and off. I like how it allows you to tighten it for your set, then loosen it while your resting. It digs into the skin a bit but I'm sure it will break in...after a year or so, haha. I can't wait till my injuries heal so I can use this belt to come back with a vengence.