Upper: Calfskin full grain leather, S3 water resistant treatment. Lining: Air Mesh 3D polyester. Insole: "Deltaplus Air Flow System" - Removable premolded - Polyester on PU. Outsole: Injected - PU. Outsole: TPU. Non-metallic footwear.

EN ISO 20344:2011 Personal protective equipment - Test methods for footwear 

EN ISO 20345:2011 Personal protective equipment - Safety footwear.