When you've got miles to cover, but want the minimum between your foot and boot, the Women's PhD®® Outdoor Ultra Light Pattern Mini is built for the job. Constructed with our new Shred Shield™ technology for reduced wear and tear, our 4 Degree™ elite fit system for a more dialed-in fit, and activity-specific mesh zones for additional breathability, this sock was made to go for miles. And miles. And miles.