This guitar strap is a re-creation of the one worn by music legend Dr. Brian May that accompanied the also legendary Red Special guitar.
This guitars strap was a normal trouser belt transformed into a guitar strap, as so many guitarists have done throughout history.
The design team adapted original RAS length system to the back of the strap to give it a wider range of adjustment so it's not as tight as they sensed the original strap was, and of course they added the holes to attach the guitar.