The adidas Terrex AX4 Mid Beta Cold.Rdy features PrimaLoft® insulation for warmth and comfort in cold weather. A fleece lining adds comfort on long hikes. A Continental™ outsole provides grip on wet surfaces, while a reinforced toe box protects against rocks. A lightweight EVA midsole provides cushioning without the bulk. The upper is made from 50% recycled materials for a more sustainable choice.