Multi Medium is a warm and versatile sock with a terry sole for extra insulation and durability that can be used for a variety of activities. Very comfortable on the foot with optimal fit and natural resistance to odor. - Elastic instep and ankle ensure a superior fit. - Ventilating mesh fabric in strategically placed areas. - Reinforced toe and heel and terry sole for extra durability. - Comfortable knit in the calf and Y-heel for a stable fit.