I wasn't sure that as an adult, I would be able to use the min version. You are able to fully extend and clip the strap to create an adult friendly back pack. I am a size 10 and this fits over my quilted coat! If you are a few sizes bigger than this or wear a thick coat, then you might find this won't do for you It is something I would use as my handbag. I can easily fit my kindle, umbrella, purse, keys, pass etc in here. It won't hold everything but that is what the bigger version is for! i am very pleased with it.
To adjust the strap for adults: (you can fund a video online to help!)
-Undo the stud at the base of the strap - feed the strap out of the top loop - extend - use the fold over clip at the bottom of the bag to secure
I wanted a Classic model, but was worried about getting a fake bag and having to go through the hassle of returning it. I picked up the Mini model because it was available at a great price for Prime members. This bag is my main camera bag. It holds my Sony A7RIII and my 8mm camera just fine. Not too heavy and good on the shoulders.