A performance single layer, mid-length, close fitting sock designed specifically for MTB (Mountain Biking ) for conditions where maximum breathability & moisture management are imperative. ISOLFIL yarn regulates body temperature, warming when you are cold & cooling when you sweat Tight terry loop inner texture maximises surface area which allows rapid wicking of moisture away from the skin The cool/dry micro-climate prevents odour causing bacteria from thriving, resulting in comfortable, oudourless feet Padded heel, toe & footbed absorb sock & guard against pressure & friction which reduces the risk of blistering Elasticated ankle, instep & cuff offer support & a comfortable fit 40d-tumble