Why settle for warm when you can have Double Layer Warm! The Woolrich Double Layer Socks keep your feet toasty, while being mosturized by their aloe-treated inner layer.. . . . . 3/4 Crew. 57% Polyester, 42% Acrylic, 1% Spandex. Double layer for Warmth & Comfort. Durable Outer Layer. Micro Soft Inner Layer Treated with Aloe Vera. Moisturizes Skin. Imported.