The knitting method is 3×1 rib knitting, which is knitted on the same old-fashioned knitting machine as loose socks. It is knitted in large quantities and then shrunk by processing to minimize tightening. Regardless of the season, warm your ankles, calves, and knees. However, it does not get stuffy and supports relaxation and a good night's sleep in the room. A must-have item in combination with socks! Because it is an Odoas product that makes rare high-grade raw material cotton into a magic thread, I think you will experience the comfort of wearing it like never before. - One-size-fits-all Length 50-55cm Shoe opening 16-47cm Hem 16-37cm - Material ・95% cotton ・Polyurethane 3% ・Polyester 2% - Made in Japan