36% nylon Made in USA Enjoy the scenery in the Merino Wool Micro Crew Socks Cushion. Sold as a one-pair pack. Micro crew-cut style peeks right above the standard hiking boot. Performance Fit prevents slipping, bunching, and blistering. Fine-gauge knitting for great next-to-foot feel. Self-adjusting welt cuff. Merino wool keeps feet dry. All weather performance keeps feet cool in the summer and warm in the winter. Mid-level cushion density under foot. Elastic arch support. Deep heel pocket. Y-stitch heel. True Seamless? toe for undetectable seam fusion and an ultra-smooth feel. 61% Merino Wool, 36% nylon, 3% Lycra® spandex. Machine wash cold, tumble dry low. Made in the U.S.A.