1 15 sweater size comparison table, male. 1 15 sweaters should be worn by thin people, about 1 15. People who weigh about 1 10 kg can wear it, but people who want to be particularly fat can't wear it. Because sweaters are suitable for people who are too fat, they are round and ugly, so 1 15 sweaters can only be worn by people who weigh about 1 10 kg.