Fox River Canyon Ultra-Lightweight Ankle Running Sock Grey Extra Large. Engineered with our URfit System these socks provide reliable support for all your adventures. With Eco Coolmax technology your feet will stay cool and comfortable while Wick Dry technology keeps them dry and blister-free. Take on any terrain with confidence. Specifications for Fox River Canyon Ultra-Lightweight Ankle Running Sock: Manufacturer: Fox River Footwear Type: Socks Package Contents: Fox River Canyon Ultra-Lightweight Ankle Running Sock - Men's Fox River 173753: Canyon Ultra-Lightweight Ankle Running Sock Grey Extra Large