Smartwool brings you the Everyday Blocked Stripe Crew Socks. This pair keeps your feet comfy. Crew-length construction. 59% merino wool, 28% recycled nylon, 11% nylon, 2% elastane. Machine wash, tumble dry. Smartwool brings you the Everyday Blocked Stripe Crew Socks. This pair keeps your feet comfy. Crew-length construction. 59% merino wool, 28% recycled nylon, 11% nylon, 2% elastane. Machine wash, tumble dry.