The Barcode MXR Mid from Helly Hansen features a microfiber and textile upper on top of a lightweight and breathable open cell PU footbed that provides long lasting cushioning and moisture management. Moulded TPU toe bumper. Moulded TPU heel overlay. Moisture wicking and breathable lining. Metal free nail penetration protection. Metal Free. Composite safety toe Safety Rating: S3S FO HRO SR 200J Composite Toe Cap Composite Penetration-Resistant Midsole Standard Fit Oil-Repellent & Chemical-Resistant Sole Not Tested for Sole Heat Resistance Water-Resistant Upper ESD Sole Shock-Absorbing Heel TPU Heel Guard Safety Rating: S3S FO HRO SR 200J Composite Toe Cap Composite Penetration-Resistant Midsole Standard Fit Oil-Repellent & Chemical-Resistant Sole Not Tested for Sole Heat Resistance Water-Resistant Upper ESD Sole Shock-Absorbing Heel TPU Heel Guard