Have you ever worn a sock that perfectly matches the contours of your foot without constricting it? Balega's VTech arch support system gives you that - a structured fit. Not too tight, just right. The new enhanced compression bands creates the ideal midfoot support structure for all day comfort. Features: - U.S. made Drynamix moisture management fibers - Non constricting compression bands - Sensitive rib top - Extra deep heel pocket - Mesh construction for ventilation - Cushioning for impact resistance - Medium volume construction - Medium cushion level - Composition: Drynamix Polyester 69%, Nylon/Polyamide 29%, Elastane 2% - Last Chance: Discontinued Style/Model Size (US): - XS: Wmn - 3-5.5 - SM: Men - 4.5 - 6.5 / Wmn - 6 - 8 - MD: Men - 7 - 9 / Wmn - 8.5 - 10.5 - LG: Men - 9.5 - 11.5 / Wmn - 11 - 13 - XL: Men - 12 - 14 / Wmn - 13.5 - 15