These are the fleece-lined waterproof socks that keep extremities dry and warm down to temperatures as low as -30º F. Used by the U.S. military, the socks have an outer layer of nylon/Lycra for durability and a comfortable stretch fit, a waterproof middle layer, and an inner layer of expedition-weight, double-velour Polartec® fleece that wicks away moisture. Pressure tested to ensure against leaks. Made in the U.S. Socks Unisex Sizes S, M, L and XL. (4 1/2 oz.)

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@adidasUS: The new @RGIII "Inspire" Team Speed socks. "Work Hard, Stay Humble." Get yours now: http://t.co/Zrh3XHD5 http://t.co/75Gb275i