Reebok safety shoe S1PS FE4 Adventure Safety IB3611S1PS, size 37 The FE4 Adventure Safety shoes fulfil the EN ISO 61340 standards for ESD shoes and offer protection against electrostatic discharge. The robust, ribbed rubber sole provides considerable slip protection. Additional comfort is provided by the padded forefoot section and the angled heel design, making them ideal for demanding environments. Composite toe cap. Upper: Microfibre, mesh and TPU. Lining: Microfibre. Insole: Moulded polyurethane foam. Outsole: Non-slip, ribbed rubber sole. Midsole: Floatride Energy foam, non-metallic. Special features: Extra wide protective toe cap, 100% non-metallic, ESD. CE category II. EN ISO 20345:2022 S1PS SR ESD.