Mavic Essential Thermo+ Sock Large Safety YellowThe Mavic Essential Thermo+ Sock. Made for the coldest of conditions, with double-knit layers as well as copper fibers woven into the fabric to prevent odors. From the beginning of the heel to the end of the toes has been reinforced for more cushioning, providing a more comfortable ride. These socks are available in Safety Yellow, Lyons Blue and Black.193128018955