No metal parts Revolution from SOLID GEAR is exactly what we are writing about - a revolution in safety shoes. Using the revolutionary ETPU material, the safety shoe provides superior cushioning and comfort. The more energy you put in, the more you get back. The stretch and CORDURA material upper provides Revolution with incredible breathability, fit and flexibility. SOLID GEAR also uses the recently developed NANO protective toecap. 40% stronger than fiberglass, lighter than other materials used, and thinner than other metal-free protective soles. Using PU-foam Sock Technology, the footwear provides the highest comfort in its class. Compliance with the slip-resistant SRC class guarantees excellent protection against slipping. ESD function in accordance with BS EN 61340-4-3:2002. Upper: Lightweight CORDURA with TPU reinforcements. Outer sole: Non-slip oil-resistant rubber Midsole 1: ETPU Midsole 2: EVA Insole: Highly breathable, moisture-absorbing and PU foam Cut: Wide Sizes: 36-48 Safety standard: EN ISO 20345:25XL S3, SRC Protection: NANO protective instep and soft metal-free toe contact area