Wellington PU boot provides good durability. Resistance to minerals, vegetable oils, disinfectants and various chemicals. Approximately 30% lighter than standard PVC/rubber boots. Upper: Antistatic and oil resistant PU Outsole: Antistatic and oil resistant PU Midsole: PU Footbed: Removable and moisture wicking and breathable EVA Fit: Wide Sizes: 36-48 Safety Standard: EN ISO 20345:2011 S5, SRC Protection: Steel toe cap and steel nail protection