At 20k waterproofing the Descente Vulcan Insulated Ski Jacket is made to handle the wettest of winters The Heat Navi reg insulation collects the heat from the sun and traps it in your jacket for improved warmth An adjustable waist and adjustable cuffs provide you with the perfect fit throughout the day The proprietary 3D articulation of this jacket gives you unprecedented movement and comfort The Descente Vulcan is the best of the best when it comes to high performance outerwear Specs Fabric Rating 20K Waterproof / 10K Breathable Shell Material Lightweight 4 Way stretch Lining Material Airflake reg Insulation Insulation Air Flake reg Heat Navi reg Synthetic Down Features Heat Navi reg insulation turns infrared sun radiation into functional heat Motion 3D articulation to provide clean natural movement 4 way stretch fabric enhances comfort and range of motion Underarm vents open to release excess heat Attached adjustable hood for weather protection Adjustable waist to get the perfect fit Powder skirt with rubber grip keeps snow from coming up inside Adjustable Velcro cuffs fit around gloves to keep out snow Pass holder on sleeve stows your pass pocket for easy access 2 zippered hand 1 zippered back and 2 zippered chest pockets on exterior to hold gear Waterproof zips so moisture wonGÇÖt seep through Slim fit is close to the body