On Running Performance Run Sock Mid

On Running Performance Run Sock MidBuilt for runners putting in real daily mileage, the Performance Run Sock Mid is our go to training sock for road and trail alike. A mid cut design with targeted cushioning under the heel and forefoot keeps hot spots and slippage from killing your run, while the anatomical fit holds everything in place over long efforts. Mid cut height adds ankle coverage and cuts down on debris entry whether you're on pavement or dirt Targeted cushioning zones under

Built-in mesh brief for all-day comfort

200g Heatseeker synthetic insulation delivers reliable warmth in cold

so you stay fresh through the whole session

Merino wool blend regulates temperature and resists odor — especially useful in Southern heat and humidity

Lightweight construction for extended use

Soft suede upper with nylon mesh inserts balances structure with breathability — holds its shape without feeling stiff

The O FIT insole and ESS plate add support and protection without the weight

Works as a standalone layer or tucks cleanly under a vest or shell when temps drop

smooth heel-to-toe ride without feeling sluggish

or a gel on longer outings

Firm compression for a locked-in fit

Built for warm-weather miles on the trail or in town