Designed specifically for use in the coldest environments. Based on a 5-layer system that is constructed to trap multiple layers of air within the garment. The specially formulated insulation made with Dupont™Sorona® provides long-lasting shape and warmth for any climate. 100% Polyester outer fabric, 340g thermally bonded insulation made with Dupont™Sorona® fibres. Polyester lining. Polyester fleece collar facing, reflective chevron adhesive tape, Chunky YKK Vislon front zip with padded baffles. Two breast pockets, two hip pockets, pen pocket on left sleeve, and inside phone/radio pocket. Inner draw cord for size adjustment. Certified to -49°C