Bogs Men's Journeyman Boot 100% Fabric and synthetic Rubber sole Natural hand-lasted rubber upper with a four way stretch inner bootie ASTM approved chemical and slip-resistant non-marking and self-cleaning deep lug outsole Molded EVA sockliner with Aegis antimicrobial protection Comfort rated from temperate to -40F or sub-zero conditions Rubber overlay high on shaft to protect against chemicals etc.