Canada Goose "Wilu" parka featuring a streamlined silhouette with fixed hood and concealed placket TEI 4 is optimal for temperatures 5°F to -15°F; it is inspired by the Arctic and made for enduring daily warmth. Center front zipper Two exterior pockets: two fleece-lined drop-in patch pockets One interior zippered security pocket Oversized fit with dropped shoulders Fully packable into the built-in bag on exterior Grab strap fits over a suitcase handle for optimal travel versatility Back pack straps convert into cross-body strap Duck down/feather fill Nylon/polyamide Made in Canada The Thermal Experience Index (TEI) is an easy-to-understand five point system that enables you to make an informed choice in your search to find the right parka, jacket, or knitwear for your specific environment and activity. It works using a scale, in which 1 indicates the lightest insulation--jackets, lightweight down for active pursuits--and 5 indicates the warmest parkas we make, the kind trusted in the world's harshest conditions.