The Outdoor series was designed for running and hiking on rugged trails in unpredictable weather. Knitted with Responsible Wool Standard (RWS) Certified Merino wool, the Outdoor Midweight Crew Wool toesocks features a ribbed leg and crew height for a tighter, more ergonomic fit that keeps out dirt and debris. The midweight terry footbed increases comfort, while the signature Injinji five-toe design ensures the foot can be fully utilized by promoting natural foot splay.