The Diadora Seb Impact was a running shoe developed for runners like Sebastien Coe (hence the name) in the mod 80s, recently getting a limited reissue by the company. If you missed out on that, you might be interested in the newly-launched Diadora Exodus.
In fact, these are an almost identical copy of the Seb Impact – the only differences as far as I can see is in the cut of the suede detailing and the colour schemes, which include the grey/purple above as well as a white/red and green/red.
Very limited numbers on these and only from Oki-Ni, retailing at £85.
