• Standards and Certifications EN ISO 20345:2011 Product Description Lining, 3D breathable textile Saya, microfiber/tpu film Aluminum Toe Antistatic Comfortable High durability Breathable Weight: X g S1 – Closed heel zone with the following characteristics: E – Heel energy absorption A – Antistatic shoes FO – Fuel oil of the outer sole Aluminum Toe Slip Resistance: Microfiber/TPU Film 3D breathable textile