Our Right Angle Loose Top Socks are designed to offer maximum comfort and support, made with less tightness at the top. The unique heel of the socks is knitted at a right angle to provide a superior fit that wraps comfortably and naturally around the heel. Size Chart Japan (cm) US (Women's) US (Men's) 21-23 5-7 3-5 23-25 7-9 5-7.5 25-27 9-11 7.5-10 27-29 11-12.5 9-11 29-31 13-15 11-13 ⚠ Warning: Reproductive Harm - www.P65Warnings.ca.gov