Falke tekking tk5 ultra socks the falke tekking tk5 ultra socks offer all day comfort thanks to the anatomical design air channels and 360 degree protection whilst the merino wool mix offers a comfortable fit socks stretch fit comfortable fit 360 degree protection anatomical design merino wool mix falke branding 40 polypropylene 35 virgin wool 25 polyamide machine washable blackgrey 46 48