The EVOLUTYON BIOTECH underwear shirt from UYN takes functional clothing to a new level. Made with state-of-the-art biomaterials, this shirt completely dispenses with synthetic fabrics made from fossil raw materials and instead relies on UYN's patented technologies. The result? A natural feel that optimally supports you during your activities in medium to low temperatures. 

The innovative kapok fibre, known as the lightest natural fibre in the world, forms the heart of the shirt. Its hollow structure provides effective insulation and creates a perfect microclimate directly on the skin. Added to this is the elastic FLEXICORN fibre, which is obtained from maize seeds. This offers you an excellent fit and full freedom of movement so that you can concentrate on what really counts - your performance. 

With the EVOLUTYON BIOTECH shirt, you can enjoy maximum functionality in a completely natural package.