RU4 Endurance Running Socks - Men's Size:44-45 Outlast® is a phase-changing material

Outlast® is a phase-changing material originally developed for NASA

67% Egyptian Cotton

Utilising specialist knitting techniques

Cotton gusset

RU4 Endurance Running Socks - Men's Size:44-45 Outlast® is a phase-changing materialFalke RU4 Endurance Running Socks for the best combination of protection and control. Medium volume technical men's sport socks constructed from a material in 3 layers for the ultimate in moisture management. Anatomically shaped left and right toe progression (marked R and L). Optimal pressure distribution and direct contact with the shoe during your run. Reinforced stress zones. 40% Cotton, 40% Polypropylene, 20% Polyamide