Killington Mountain Hiker Sock in Black. 70% Certified Organic Merino Wool 29% Nylon 1% Spandex. Our new Hiker - Biker Sock is named after Killington Mountain in Vermont. The president of Maggie s hiked 6 miles to the top of this mountain and she found that the original samples of these socks SAVED her feet! We are happy to add these cushioned hikers to our line of quality Certified Organic Wool socks! (Machine or hand wash in cold water line dry)- SKU: BNGLA23088