As a reminder, the size of a belt corresponds to the length of the belt in centimetres. And contrary to popular belief, this length does not correspond to the total length of the belt, but to the length between the beginning of the buckle and the central hole of the belt. To find out the size of a belt, take one of your belt and measure the length between the end of the buckle and the hole you usually use. Normally this hole is marked by use, otherwise you can wear the belt and mark the hole that suits you. This will give you your belt size. It may be that the hole you usually use is not the centre hole of the belt, in which case the belt is not your size.