PURPOSE: To provide socks used for improving the walking of an aged man, correcting his walking posture and treating his lumbago, knee arthropathia or leg arthropathia.

CONSTITUTION: Each of the socks is provided with a means for attaching a reverse heel sole 1 to the sole of the sock, a means for forming the width of a tow box 3 larger at least than the width of a ball joint part 5, a means for forming a tow spring part 2, and a means for forming a heel part 4 into a structure tilted toward the toe on the basis of the vertical direction. The walking posture of an aged man can be corrected in a Japanese style house, and when reverse heel shoes are simultaneously used, a remarkable effect can be exhibited.