Sockwell Synergy, Khaki, Large/X-Large 31% Merino Wool, 31% Bamboo Rayon, 30% Stretch Nylon, 8% Spandex Made in US Moderate (15-20mmHg) Graduated Compression - Recommended for: All day and every day wear; Prolonged sitting or standing; Flying and traveling; Exercise and recovery; Minimizes or eliminates swelling of the feet Promotes circulation, minimizes swelling, and helps reduce fatigue 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 Ultra-light cushion sole provides comfort and great fit Offers arch support, turn welt top and seamless toe closure with reinforced Toe and Heel Box helps keep the sock in place throughout the day