| Ironman Sock Sizes |
| Sock Size |
US Men's Shoe Size |
US Women's Shoe Size |
| S |
N/A |
4-7 |
| M |
6.5-8.5 |
7.5-10 |
| L |
9-12 |
10.5+ |
| XL |
12.5+ |
N/A |
Sock Geek Says:
 A marathon and triathalon winner's favorite crew length running sock. Moderate cushioned-sole. Foot hugging fit. Virtually seamless toe enclosure. Ironman Triathlon logo on the arch.
Note: This sock was known for many years as the Ultimax Running Crew.
Ironman Running Pro Sock Specs
Sock Fibers:
35% - Olefin
30% - X2O® Acrylic
25% - Stretch Nylon
10% - Lycra Spandex |
