For the photographer/birdwatcher carrying a heavy camera or binoculars, The super Classic strap is a great option. It has the same tailored design as the popular classic strap; however, it adds the patented internal control-stretch system found in our s.O.S. Strap in addition to our non-skid surface. This combination is ideal for the individual wanting a narrower strap design that has the needed strength and comfort features required for handling a heavy load.