These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Light Cushion 2nd 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. | Smartwool Hike Classic Edition Second Cut Crew Socks in Charcoal | Size: Medium