DARN TOUGH RUN 1/4 UL RUNNING COLOR:BLACK Because traditional fueling gels and

Because traditional fueling gels and drinks use carbohydrates that break down too fast to tolerate

Convenient size is perfect for the gym

L-Histidine

• Super-light 1" soft non-chafing elastic for optimal race-day comfort

Breathable 4-way stretch fabric creates a snug fit that stays put during intense activity

DARN TOUGH RUN 1/4 UL RUNNING COLOR:BLACK Because traditional fueling gels andTake on everything from single track training to jeep road crushers in the smooth and ultra lightweight fit of the redesigned running sock. Its added ankle coverage sports silky next to skin ribbing, with breathable flex zones in the forefoot and fatigue zapping arch support. Height: Quarter Weight: Ultra Lightweight Sock Size Shoe Size Men Unisex Men US Women US EU UK XS 2. 5 5 4. 5 7 35 37. 5 2. 5 4. 5 S 5. 5 7. 5 7. 5 9. 5 38 40. 5 5 7 M 8 9. 5 10