Version 1.0: The Original. Frankly in a perfect world a shoulder rest would do nothing and be nothing. It would be weightless and invisible and would feel needed when needed and practically non-existent when not. The next best thing would be one that conforms to the player's shape in a pleasing and comfortable manner. I offer my solution in several formats.
Version 2.0 Bandless attachment with Micro-pore plastic bumpers. Also a streamlined platform pattern reduces weight while allowing more adjustability at the critical collar bone contact point.