Men's functional undershirt AMBOS is made of quick-drying, vapour-permeable, flexible, warm and structured material containing activated bamboo charcoal, which excels in fast moisture wicking, the ability to absorb odors and keep the body warm, has an anatomically shaped, close-fitting cut and elastic flat seams only for connecting the sleeves. Material composition: 65% polyester, 27% nylon, 8% elastane.