| 摘要 |
PROBLEM TO BE SOLVED: To provide cold-protection socks excellent in heat insulation.SOLUTION: The knitted structure of an instep side portion 3 and the knitted structure of a sole portion 4 are knitted of flame retardant fibers 5, back side threads 7 of polyurethane yarns covered with polypropylene yarns, and hygroscopic heating fibers 8, so that they can be a cold protection sox 1 which can keep the instep side portion 3 and the sole portion 4 from becoming cold. Moreover, the cold protection sox 1 can be made more comfortable by knitting the sole portion 4, which might otherwise become colder than the instep side portion 3, of three flame retardant fibers 5. |
