Coolfusion bridgedale coolfusion technology maximises the benefits of natural and technical fibres knit in such a way so as to deliver a highly ventilated sock ensuring it is light and comfortable in the warmer conditions we find on this planet targeted padding provides additional cushioning and foot protection delivering fantastic lightweight comfort for those hiking biking or running on the worldrsquos great trails lightweight hybrid sock trail day hiking t2 padding and ventilation 3 year g