First of all, the production material is reinforced synthetic rubber.
Mostly used in diving suits and long, medium and boxer trunks.
Second, the production material is a combination of nylon and spandex.
Mostly used for long, medium, right angle and triangle swimming trunks.
Third, the means of production is cotton.
Mostly used for boxers and briefs.
Swimming trunks are mixed with high elastic materials to avoid water in the pants and affect the swimming speed.
Therefore, people who wear it for a long time will squeeze human sexual organs, which is not good for the body. If you don't come out in time under the action of human body temperature after swimming, the water in wet pants or the hair in the human body will become hot, which is even more unfavorable to human organs.
Waterless swimming trunks are the first type: reinforced synthetic rubber. The third one with higher water content is cotton.