Thorlo Moderate Cushion Trail Running Mini-Crew Sock Constructed with THORLON blended with THORWICK COOL fibers for superior softness, resilience, durability and extra moisture-wicking for drier, cooler, better feeling feet. Cushioned instep and arch for a better fit, more support and less pressure on the feet for a more comfortable run. Low profile toe seam wont rub or irritate the feet. Unique padding specifically engineered for trail running, clinically shown to reduce blisters, pain, pressures and moisture. Ankle Length, Moderate Cushion