Men's functional underpants CALON are made of quick-drying, vapor-permeable, stretchy, warm and structured material with active bamboo charcoal content, which excels in quick moisture wicking, ability to absorb odors and keep the body warm, have an anatomically shaped, snug fit and elastic flat seams only on the inside of the trousers. Material composition: 65% polyester, 27% nylon, 8% elastane.