The Everett S3 is a non-metallic waterproof safety boot that offers cold insulation up to minus seventeen degrees. It features Thinsulate lining for cold insulation resistant to -17 degrees. The waterproof, full grain leather upper keeps feet dry and protected, providing long-term durability. It has a tough and durable rubber outsole for excellent grip. The composite toe offers great protection and is lighter than traditional steel. It provides energy absorption, puncture resistance, and has a heat-resistant outsole, making it ideal for aviation due to its non-metallic construction. A molded TPU scuff cap and heel guard enhance protection. The molded EVA midsole offers additional shock absorption and all-day comfort. It is also antistatic. Upper: Leather; Lining: 3M Thinsulate & Mesh; Sole: Nitrile Rubber. Heel Height: 2.0 cm. Safety Standard: EN ISO 20345:2011; Safety Rating: S1; Safety features: E HRO SRC FO.