If you need a durable and reliable waterproof sock that provides warmth and comfort for all-day outdoor work, you want shower pass' classic series socks. Shower pass' original design, these waterproof socks feature 39% Merino Wool lining for a great blend of performance and comfort. Fit & Design: Durable and reliable design with premium wool lining Mid-calf (9.5" height) waterproof protection Moisture wicking, natural anti-microbial merino wool lining 3-layer construction: Wear-resistant knit exterior, a seamless waterproof Artex(TM) membrane, and a soft, comfortable lining Ergonomic fit due to a proprietary 3-D molding process Microporous waterproof membrane allows the sock to ventilate in order to decrease sweat accumulation