PERFORMANCE FIT for running, walking, standing, sitting, gym, yoga, or sleep in them. Every style is engineered with technical, sport-specific features, and built with patented fibers developed through years of exhaustive research, increased comfort and performance. STAY UP DEEP HEEL CUP Superior shape retention and a deep heel cup to keep it from sliding down into your shoes HAND INSPECTED every pair of socks is inspected for quality and function. PREWASHED Machine washed and treated in "chemical free" softener. SILVER DRYSTAT is our exclusive fiber that gives optimum moisture control reducing the growth of bacteria and fungus to promote a healthier environment for your feet. ODOR CONTROL your feet may smell, but your socks will resist odors. DRY FEET = LESS BLISTERS. Lightly padded at the ball and on top of the foot to promote comfort and eliminate abrasion and foot stress. Compression starts mid foot to support arch and plantar fascia. Reduces Injuries - Plantar fasciitis, shin splints, calf cramps, pulled muscles, achilles and heel cup issues, blisters, blood pooling. Perform better, recover faster, and boost your performance. MADE IN ITALY By Arcos, quality socks under the brand names Vitalsox, Sox, Worksox, Caresox, Recovery Socks, Eurosocks, and Euros.