I have been using Ex Officio boxers and boxer briefs since they were first released. I live and work in Asia, in climates that vary from steamy southeast Asia to the frigid Tibetan plateau. These are the finest underwear available for all climates. They wick away perspiration superbly and allow it to evaporate, so they never develop the clamminess of cotton. They also breathe better than other brands of travel wear. They wash and dry very easily. I dry them by rolling in a towel then hang overnight. They are ready to wear within a few hours. They are expensive; but you really can get by with 2 pair and be clean all the time. I prefer the boxer briefs over the plain boxers as they fit comfortably under jeans and travel pants. Better for trekking too. But I also have a pair of boxers for sleep wear.