Produced by SOS., SOS socks use core-spun COOLMAX® fabric. The sock ffeatures COOLMAX® fabric on the inside of the socks where it controls moisture from the foot; while the 3-ply nylon is used on the outside of the socks for strength and durability.
| | Small | Medium | Large |
| Men's | 4-6.5 | 7-9.5 | 10-12 |
| Women's | 5-8 | 8.5-10.5 | 11-13 |
| Euro | 35-38.5 | 39-43.5 | 44-46 |