If you're looking at these you probably have a good idea of what they are. Basically same as a Genius right up to 7 (is there an 8 or 9? I haven't seen any). They use velcro instead of the BOA that the newest SIDIs use. I use both and can't say one is better than the other. These have been worn a couple of times over the last I don't know how many years. Would pass for new. Have Look cleats attached but have adaptor system for Look, Time and even cleats if you want. A pair of new Genius go for $400 plus taxes. Save the money for some nice wine. Shoes are in Mill Bay.