A light and highly breathable sock with targeted ventilation to keep feet cool. CoolFusion RUN technology maximizes the benefits of natural and technical fibres knit in such a way so as to combine ventilation and cushioning with elasticized fit and foot wrapping performance. Built with Bridgedale's exclusive T2 anti-shock technology. This is a loop within a loop which offers an additional level of impact protection; the inner loop has even more resilience than the outer loop for cushioning on the achilies, heel, and metatarsal head. T2 pad technology has been knit into the pressure points: ball of the foot, lace up. Knit with Merino Wool that provides softness and excellent moisture wicking properties. ENDUROFIL adds additional durability and wash resistance and LYCRA SPORT for the perfect fit. Light cushioning and 3/4 crew height.