The Klimatex BIRKI men's long-sleeve shirt is made of highly functional fabric. The thicker material is quick-drying and reliably wicks away sweat, the inner side is combed and thus guarantees good thermal insulation properties. The T-shirt has an unobtrusive sublimation design print on the front and back which does not change the tactile properties and functionality of the knitted fabric. The lower part of the sleeve is made of extra stretchy and breathable mesh for easy sweat ventilation. The shirt is sewn with flatlock seams that won't irritate the skin and are comfortable to wear. The T-shirt is complete with reflective prints to increase visibility in twilight and darkness.