What are the benefits of wearing two pairs of woolen socks when hiking, camping, etc.? - Quora
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RIOROO Mens Ski Socks Merino Wool, 2 Pairs Men's High Performance Thermal Knee High Winter Socks for Skiing, Sowboard, Hiking, Walking, Trekking, Long and Warm, Cushioned Sole Breathable Quick Dry : Amazon.co.uk: