[GaryMulcahey]

I don't attach it to anything but you could. This was a present to me so I didn't have a choice on options.

Martha : Mine has the shoulder strap.

I do not attach it to anything. It fits snug inbetween the seats and has never poped out from hard breaking.

I don't live in the city where there are theives and stop and go traffic.

This company is very helpful. They will custom build to a certain degree. If you called and ordered a bag but you wanted a specific strap and size they are pretty good about it. The shop next to my studio sells them and I will go intomorrow and ask what can and can't be ordered.

Maybe we can get some bags made specifically for our Bosxters.
I will look into that.