Vitalsox Tennis Extra Padding Drystat Compression Calf Length Socks VT0313T Fitting Chart Small Ladies 5-8 Men's 4-7 Medium Ladies 8-10 Men 7-9 Large Ladies 10-12 Men's 9-11 Extra Large Men's 11-14 Foot & Ankle Compression starting Mid Foot for Plantar Fascia and Arch Support Silver Drystat is our exclusive fiber, stopping the growth of bacteria and fungus, prevents blisters and reduces odor Made in Italy using the latest technology and fibers, never outsourced to the lowest bidder Designed for tennis and lower leg wellness, popular for Walking, Running, Maternity, Yoga, Travel, Standing or Sitting and Sleeping