Given that there are no dealers in Germany, it will be difficult to try any on before hand. I dont know what the fit of the non selvedge RMC's is like compared to the selvedge RMC's but if I assume it to be the same, then the best advise I can give is to buy the same size RMC as you would if you were buyng a pair of Evisu Heratage or No1/No2 Evisu as they are similar in fit. If you have never bought any Evisu, try a dealer near you and try some on and see what size you prefer, then use that as a guide to the best RMC size for you. Best of luck buddy