An excellent sock designed for your on-the-go lifestyle. Features an anatomically designed sock made specifically for his left and right foot. Cushioning from top of welt to toe for overall comfort. Ravel-free double welt top to keep sock from sliding. Stripe bands help promote circulation. Anatomical Flex Fit system limits bunching feeling underneath feet. Y heel pockets for a better fit. Reinforced toe and heel for extra durability. Consists of 60% Merino wool, 35% nylon, 3% Lycra, 2% polyester. Machine wash cold inside out, tumble dry low. Mid crew-cut for comfort feel. Made in the USA.