High visibility, high ventilation Uyn LIGHTSPEED is the lightest shirt in our collection, perfect for particularly hot days when ventilation and sweat absorption are vital. The front area and sleeves with FLOWTUNNELS technology provide the most advanced and effective breathability ever. The back panel is made using the special ultra-lightweight AERNET PLUS fabric, designed to ensure extremely rapid heat dispersion. The comfortable regular fit and high visibility inserts on the back, from the large reflective piping to the fluorescent material pockets, make the Uyn LIGHTSPEED shirt exceptionally versatile, suitable for road riding as well as gravel and urban cycling.