This design I created first about 15 years ago. I called it BB not because of Brigitte Bardot but thinking of the 1950s Batman Mobile... so the Batman Bag... or better Batwoman Bag :)
A few friends asked me to do it again and I guess Vintage is good now.
It comes with a detachable shoulder strap that gets attached with dog clips to the metal fittings holding the short handle. Zip pocket, mobile pocket and key hook inside (Suede lining).