Warming System: 200g 3M Thinsulate Material is considered the warmest thin apparel insulation available. Stay warm in temperatures as low as -25F. Provides about twice the warmth of other high-loft insulation materials when equal thicknesses are compared.
Waterproof Material: Features waterproof construction; windproof with a synthetic toe cap for anti-collision. Seam-sealed water-resistant construction against any wet environment.