My friend who is a professional residential photographer who uses DSLRs recommended me to go with Mirrorless. Very useful for isolating items like external power supplies that you dont want to unplug each time you have finished using it for a while. Hopefully they will last awhile without breaking. No tightening, no itching. As secure as this thing is I bet it could be used on a motorcycle as well! The sole was correct but the strap was way too tight. It?s smooth and very comfortable. I bought these in January. He wasn?t interested in it and it was an interesting movie for me. Good looking bag at a great price.