The classic strap is the number one seller in the range, slightly thicker than the "soft strap," but not quite as wide. Machine stitched edging to the neoprene gives a well-finished appearance. Made from slightlty stretchy neoprene. It's as if you have a shock absorber on your sax and it takes any jarring away from your neck.They say it makes your sax feel up to 50% lighter.