X BIONIC Bondear 4.0 Beanie Black/Charcoal, Size 2

If you are cold in the sensitive area of the head or sweat during intense activity, the BONDEAR HEADBAND 4.0 takes over the effective temperature and moisture management. The high-resolution Retina process produces an exceptionally dense material in which the functional zones are seamlessly integrated and can act with pinpoint precision. The legendary patented 3D Bionic Sphere System with Thermosiphons technology is more powerful than ever and ensures a constant feel-good climate. Sweat Traps catch the sweat before it begins to flow and support the temperature balance through targeted evaporation. 100% research, development, design and communication done in Switzerland, made in Italy. More than 600 awards and test wins, over 800 patent registrations worldwide for the brand with the "X".