Usage Area: Occupational Safety Standard: EN ISO 20345 Safety Shoes Upper: Breathable genuine leather. Inner Lining: Inner lining that has high abrasion resistance, absorbs sweat and dries in a short time. Base Technology: Dual Density Injection Sole Technology Penetrating resistant "L-PROTECTION" midsole is used antistatic Thanks to its shock absorption and softness, it provides the most appropriate comfort to the user. SRC Superior Slip Resistance Additional Features Not detected by metal detector Not visible on X-ray scan Weight: 500gr (approximate weight for 42)