On a long run in changing weather you want clothing that works with your body: cooling when you sweat and holding warmth when it gets cold. That is exactly why we carry X-Bionic at Trail.NL.
X-Bionic designs sports technology in Switzerland and makes socks, arm sleeves and neck warmers, among other things. The X-Socks trail socks, for example, have heel stabilisation and a ventilation channel for moisture removal. X-Bionic gives a 2-year warranty on the accessories.
For us, X-Bionic is above all a technical and precise brand for runners who appreciate details: smart technology in small items that are easy to take along.