Product Details This lightly cushioned hiking sock comes with all the great qualities of Merino wool: odor resistance, warmth, durability and moisture-wicking breathability. Fabric & Care 54% nylon, 43% merino wool, 3% Lycra® spandex. Machine wash and dry. Additional Features Reinforced footbed and Achilles cushion provides excellent comfort and improves durability. Micro-crew height averages 7.5 inches from heel to cuff. Darn Tough's legendary performance fit prevents slipping, bunching and blisters. True seamless toe technology for a smooth, undetectable feel. Breathes naturally and provides flexible all-day comfort. Made in USA of imported materials.