Koson-Man Men's Solid Swimwear Swimming Trunks Reviewhttp://tinyurl.com/mhlxlgd Koson-Man Men's Solid Swimwear Swimming Trunks Made of spandex.Wash with cold water.82% Nylon,18% Polyurethane.Wear breathe and comfortable.DUE TO ASIAN SIZE.Please choose ONE SIZE UP than you normally wear.