From North Face: By combining a waterproof DryVent™ outer shell with a removable, insulated inner layer, the slim-fit Men’s ThermoBall™ Eco Triclimate® Jacket allows you to customize coverage and protection to your activity. THIS IS ONLY THE OUTSIDE LINER! Great for ski'ing or snowboarding. Shell with waterproof, and waistline snaps. Acquired from my partners dad, he has like 50 different north face jackets, so I assume he rarely wore this.