Iu-600 Long Competition Socks (Z150Ui600Socksb4445) By Sabelt®. Size: 44-45 (EU). White color. Together with the drivers and their teams, Sabelt research is underway to meet the new objectives. This year, the goals achieved have taken shape in the new range of seats, the latest generation of racing suits, the innovative line of shoes and socks. 100% Aramid Fiber Professional Hand Knotting Crafted By Experts Using Advanced Technologies Unwavering Commitment To Excellence Guaranteed To Deliver Reliable Performance For Years To Come