Made from thick, double-faced fleece, these fishing socks are built to keep your feet warm in the coldest winter conditions; these also an ideal companion piece to Patagonia's ultra packable Middle Fork waders allowing you to use your normal wading boots with them rather than a size. 18-oz Polartec 86% polyester (80% recycled)/14% elastane double-faced fleece provides maximum warmth Designed to be worn over a sock for extreme winter fishing conditions Can also be worn as a volume-adding companion piece with seamless wader booties 142g (5oz)