High-performance running socks using NANOFRONT technology. - Brand: FUNCTIONAL FIT - Model: RACING MODEL - Size: 27-29 - Features: Uses NANOFRONT technology ・One is new (red) ・Two pairs are used, in good condition ・Tabio socks have considerable wear. They're too good to throw away, so how about using them for everyday wear? ・There is one sock remaining (used!) I can include it if you'd like. Thank you for looking.