The Klimatex BIRTA women's running T-shirt is made of a combination of highly functional fabrics. The luxurious extra stretchy material with a high polypropylene content ensures an optimal microclimate and skin temperature. The polypropylene fibre is lightweight, has excellent thermal insulation properties, wicks away sweat and leaves the skin dry and odour-free, is colourfast and prevents the growth of bacteria. It ensures maximum moisture wicking and fast drying. The material is ideal for increased physical stress, helps maintain an optimal skin temperature, eliminates fluctuations in temperature when alternating between high exertion and resting phases. It will stop you from getting sick from the cold. Thanks to the flat seams it does not irritate the skin. The shirt is complemented by reflective prints that increase visibility in twilight and darkness.