We are making the strongest shoulder strap on the market because carrying two fully loaded panniers with one strap can be quite an ordeal at times! It is the perfect strap, as light as we could make it, yet strong like no other. The webbing is a tightly woven nylon with a comfortable shoulder pad. The shoulder strap is adjustable in length and the hooks have an integrated swivel to prevent twisting of the strap for ease of operation and increased comfort. It is truly worth every penny!