The Everett S3 is a non-metallic waterproof safety boot that offers cold insulation up minus seventeen degrees. - Thinsulate lined for cold insulation that can resist up to -17 degrees - Waterproof, full grain leather upper keeps feet dry and protected, and provides long-term durability - Tough and durable rubber outsole that provides excellent grip - Composite toe: same great protection but non-metallic and lighter than traditional steel - Energy absorption, puncture resistant and with a heat resistant outsole - Non-metallic: ideal for those working in aviation - Molded TPU scuff cap and heel guard for enhanced protection - Molded EVA midsole offers additional shock absorption and all-day comfort - Antistatic.