Acid and oil resistant neoprene upper. Acid and oil resistant stitching, laces and hardware. High visibility reflective strips. Acid and oil resistant rubber Outsole for slip resistance in extreme cold temperatures. Ice Bear outsole design for additional traction in ice and snow. Light weight PU base is cold crack tested to 50,000 flexes at -50C. Light weight Gel-flex mid-sole provides cushioning to reduce fatigue and improve comfort. Improved fit allows for maximum comfort and support. Metal free safety toe and plate with Electric shock resistant sole. Baffin -100'C 8 layered inner boot. Microcellular waffle foot-bed traps air and moisture. Frost plate foot-bed.