Magnum Roadmaster Uniform Safety BootsNon metallic composite hardware keeps these scanner safe. A PU high density midsole adds long lasting support. Further comfort is added with the padded collar and tongue. The SRC high traction rubber outsole is designed for maximum grip. Durable full grain leather upper Hardwearing TPU toe guard & heel support structure for added protection Composite plastic toe cap and penetration resistant plate which is as strong as steel but much more lightweight,