I bought this because with the strap mounted to the fitted pin on the heel of the violin bass I find that the instrument rolls forward.
This strap definitely helps alleviate this problem as it hangs the bass from a more forward position with a much better balance.
Whilst the strap is extremely well made I shall never use it, simply because the underside of the leather is extremely rough and it would be like wrapping a piece of coarse sandpaper around the body and would cause damage to the finish. Also, the metal parts will rub on the bass at the tail-piece end and cause damage.
So, this strap, whilst very well constructed, for me will be consigned to a cupboard and never used, but it has given me the idea to make my own, using it as a template, but using a much softer leather.