Featuring Light Elite cushioning, the Smartwool PhD RUN Light Elite Low Cut Socks contain targeted cushioning placed only where runners need it most, on the ball and heel of the foot. Crafted specially for distance runners, maximum impact protection with targeted cushioning on the ball and heel of the foot. Smartwool packed these socks chock full of smart features like our 4 Degree elite fit system, men's-specific mesh ventilation zones, and a virtually seamless toe. A low cut height provides that ideal balance of protection and style.