Hollow Performance Alpaca Socks - 2 Pairs Hollow Alpaca Performance Socks offer a combination of luxurious comfort, reduce moisture by repelling water and heat and cold regulating thermal properties. If you're looking for the ultimate in alpaca socks, Hollow is simply the best. • Brand New • Ankle/Quarter • 43% Premium Peruvian Baby Alpaca Fiber, 53% Nylon and 4% Spandex • Color: Grey • Size: Large - Men 10.5-13 - Women 10.5-12 • Made in the USA!