Redbrick Smaragd, you might not notice it at first glance, but this is an S3 safety shoe. Redbrick shoes feature a sneaker design that makes them comfortable to wear and visually appealing. Moreover, they are excellent safety shoes. These stylish work sneakers are made of leather, have a composite safety toe, and a Kevlar midsole. This makes them lighter than most work shoes. Additionally, the Cambrelle lining provides thermal insulation, and the shoe is equipped with a slip-resistant rubber sole. Features: - Composite toe cap, 40% lighter than steel - flexible puncture-resistant midsole, 40% lighter than a standard steel sole - non-magnetic - thermal insulation - Cambrelle lining - breathable rubber sole - nubuck upper - oil and acid resistant.