Castelli Active Cooling Ärmelloses Top Herren silver/gray
Undershirt for hot days made of Polartec Delta material with regulated drying effect so that the evaporation effect cools the body. Active Cooling Sleeveless Cooling Technology
By using hydrophilic and hydrophobic yarns, this base layer holds a bit of moisture next to your body while allowing free airflow through the fabric, thanks to the special open knit. You get evaporative cooling directly on your skin.