The Whirlibird IV Interchange Jacket from Columbia is designed for ultimate versatility both on and off the mountain. This waterproof and breathable jacket is constructed with Columbia's Omni-Tech Technology outer shell and a liner loaded with Thermarator Insulation for lightweight warmth. A zip-in 3-point interchange system allows you to wear the Whirlibird IV Jacket three different ways: as a shell, as an insulator or together to keep you completely protected from the elements. The attached, adjustable hood offers additional coverage when needed, while underarm venting allows you to cool down when things start to heat up. The Whirlibird IV Jacket also features multiple multi-use pockets, adjustable cuffs and an adjustable drawcord hem to keep cool air and snow at bay. Omni-Tech Waterproof/Breathable, Critically Seam Sealed, Omni-Heat Thermal Reflective Liner, Thermarator Insulation - 100% Polyester, Zip-in 3-Point Interchange System, Attached, Adjustable Hood, Drawcord Adjustable Hood, Underarm Venting, Zippered Chest Pocket, Ski Pass Pocket, Interior Security Pocket, Goggle Pocket, Zippered Hand Pockets, Adjustable Cuffs, Drawcord Adjustable Hem, Exterior Material: Legacy Dobby - 72% Nylon/ 28% Polyester, Insulation Weight: Not Specified, Taped Seams: Critically Taped, Waterproof Rating: 10,000mm, Breathability Rating: 10,000g, Hood Type: Fixed, Pit Zip Venting: Yes, Warranty: Lifetime, Type: 3-in-1 Jacket, Jacket Fit: Regular, Length: Hip, Insulation Type: Synthetic, Waterproof: Mild Waterproofing (5,001 - 10,000mm), Breathability: Mild Breathability (5,001 - 10,000g), Cuff Type: Hook and Loop, Cinch Cord Bottom: Yes, Warmth Factor: Warm, How Does This Fit?: True To Size, Model Year: 2020, Product ID: 580197, Model Number: 1868492548 1X, GTIN: 0192660066394