Men's functional underpants CALON are made of quick-drying, vapor permeable, flexible, warm and structured material containing activated bamboo charcoal, which excels in fast moisture removal, the ability to absorb odors and keep the body warm, have an anatomically shaped, snug cut and flexible flat seams only on the inside of the legs. Material composition: 65% polyester, 27% nylon, 8% elastane.