This team sock is fabricated for us by Castelli using their Rosso Corsa sock platform. Top of the line offering for performance orientated cyclist in a modern 20cm cuff. The Team Socks feature an excellent design and sits at the top of the Castelli sock line up. They feature a supportive leg band to keep the sock in place, but it is not too restrictive as to disrupt circulation and comfort. This top cuff is doubled over and the stitching runs around your lower leg. The top section of the body of the sock is a diaphanous web which means it is super thin and aerated for maximum breathability. The rest of the body has a slightly thicker and more elastic composition to offer more support. Castelli added a compression band around the instep for a little more added support. The entire sock is constructed of Meryl® Skinlife, which wicks moisture extremely well. It is also bacteriostatic, to keep your feet fresh and protected, which is always a plus with socks. of any kind.