The UYN Man Evolutyon Biotech UW Shirt LS ushers in the future of functional clothing. The unique focus on biomaterials, free from synthetic fossil fuels, sets this shirt apart. Optimized with UYN's advanced technologies, it provides an exceptional, natural feel against the skin. In medium to low temperatures, the natural insulation effect of kapok fiber offers you optimal protection. The innovative Flexicorn fiber made from corn seeds guarantees unrestricted freedom of movement and an optimal fit.