Harking back to the days riders wore thick wool socks over their race shoes, Belgian Booties as we now call them, have always been a feature of the Classics. The Team Sky Belgian Booties take all that's good about the concept, such as being lightweight, breathable and flexible, and give it a modern twist. They feature polypropylene knitted fibres offering warmth, stretch and durability whilst also not absorbing any moisture. Great for keeping the worst of the cold out and muck off your shoes you can also use these under your shoe covers for greater warmth on the coldest of days. Although, remember this is a knitted-over sock and so provides an amazing difference in thermal retention but it does not replace a shoe cover as it is not waterproof or windproof!