Answer the call of a cold-weather adventure with this adidas Terrex beanie. Lightweight Merino wool keeps you warm without overheating for welcome temperature regulation in frigid conditions. Slip it on for a winter hike or wear it under your helmet for extra insulation on the slopes.This product has been made with at least 50% renewable materials. Switching to renewable material sources offers more options to reduce our reliance on finite resources. We choose renewable materials because they are natural resources that can be planted and grown again. This is unlike fossil fuel based materials, which once used, we cannot replenish. Renewable materials are not only natural materials, but also bio-synthetic materials that have a plant feedstock instead of fossil fuel. This feedstock is chemically processed into intermediate substances and is turned into synthetic materials in the end.