uvex 65673 uvex 1 S3 SRC shoes, BOA, black/red, 12 width, size 35-52 Penetration-resistant, non-metallic midsole in accordance with the latest safety standards, does not restrict flexibility. Made with a new developed last technology for extended wearing comfort uvex climazone technology ensures optimum wearer comfort. Breathable, water-resistant high-tech micro velour upper material. Distance mesh lining provides optimum breathability. Suitable for people allergic to chrome. Made from synthetic materials.