The vest features an "HT" abrasion-resistant nylon Ripstop shell. The 120-gram insulation housed in the vest keeps the wearer warm. A zippered internal pocket is provided for self-packing purposes. Zippered handwarmer pockets provide added storage and protection for cold hands. The vest is perfect for any outdoor adventure like fishing, hunting, hiking, camping, biking, and more. The Frogg Toggs Co-Pilot Insulated Vest is a water-resistant puff vest that zips into all Frogg Toggs men's Pilot series jackets.