First of all, it depends on what series of Adi you bought. Different series and styles will naturally have different clothes sizes. Secondly, Adi's size is divided into Asian size, international size and special size, which is not easy to decide. Just buy size m according to normal height 170. If it is strong, it should be no problem. M code is 175, and if you are fat, it is L 180! The international code m is 180.