Short Sleeves & Tanks for Running by O'Neill

Functional short-sleeved shirts are the right choice for sweaty activities like running and fitness training. While normal leisure shirts made of cotton are significantly heavier and dry more slowly, materials like synthetic fibers and merino wool wick sweat away from the skin faster. They are also usually lighter and more air-permeable. Nylon and stretch, for example, ensure optimum freedom of movement.