The Insulated Storm Shift Jacket is the warmest in our Snow line, with 2-layer GORE-TEX ePE fabric, strategically placed Thermogreen insulation, and a baffled, supersoft interior for wicking, waterproof warmth in even the coldest conditions. Fabric, membrane and durable water repellent (DWR) finish are made without intentionally added PFAS. Made in a Fair Trade Certified factory.