These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Full Cushion Second Cut™ Crew Socks are made with a mix of recycled fibers, canister waste, and virgin Merino wool for a pair that feels good and does good with every step. Plus, the full cushioning helps add extra warmth, durability, and protection, making them the perfect pick for colder weather hikes.