The length of the men’s swim trunks depends solely on the person wearing them. If the person is tall, then it is advised that they wear longer trunks because otherwise they will expose a lot of skin. On the other hand if the person wearing the trunks is short, then they should go for short or mid-length trunks, this is because in this way they will avoid looking too short. The body type has a lot to do with what length swim trunks a person should be wearing. So, that is something to bear in mind.