PERFECT COMPRESSION - Firm (20-30 mmHg) Graduated Compression is recommended for all day and everyday wear, prolonged periods of sitting or standing, travel, or exercise and recovery. Promotes improved circulation and helps reduce fatigue. IDEAL FIT - Accu-fit technology, consisting of spandex throughout the sock, ensures same fit at the end of the day as when it was first pulled on. TECHNICAL FEATURES - Ultra-light cushioned sole, turn welt top, structured arch support and seamless toe closure provide added comfort. ORIGIN & CARE - Made in the USA ; Machine wash warm, tumble dry low; turn socks inside out for best results. SIZING - Available in M/L and L/XL. M/L fits men's shoe sizes 7 - 10; L/XL fits sizes 10.5 - 13