Adidas Supernova CSH6 and Adidas Rotterdam IV. Supernova is a well cushioned shoe that still feels decent when you run fast. The Rotterdam is a suprisingly well cushioned marathon racing shoe and works well for faster running. Looking to get a pair of spikes for track races and speedwork on the track. I liked the look of the Nike spikes Shalane Flanagan was wearing in the Trials - looked like some cushy spikes. Anyone know what model they are?