Alpaca Starry Stripe-Charcoal Combo by Alpaca Arts. Size Large (Shoe Size 10-13). Alpaca is incredibly soft and twice as warm as wool. Wicks away moisture and is less allergenic than wool. 41% Alpaca 34% Acrylic 23% Nylon and 2% Spandex. Made in Peru. Machine wash cold and tumble dry low.