Reach the peak with Columbia and the Plus Size Whirlibird IV Interchange Jacket. Ideal for heavy snow and mountain activities. Omni-Tech shell: Two-layer design with plainweave outer and waterproof membrane. Waterproof and fully seam-sealed protection. Breathable design allows passage of moisture-vapor from perspiration. Omni-Heat reflective lining: Metallic lining reflects body-generated heat for improved warmth retention. Backing dissipates excess heat. Membrane comprises sixty-five percent of lining for high breathability. Thermarator insulation maintains body heat. Zip-in and 3-point interchange system features a waterproof shell and a thermal-reflective liner that can be worn together or separate depending on your needs. Attached hood with adjustable design. Full-zip closure with storm flap. Long sleeves with underarm venting and adjustable cuffs. Ski pass pocket. Internal security pocket. Dedicated goggle pocket. Adjustable drawcord at hem. Material breakdown: Shell: legacy dobby 72% Nylon, 28% Polyester. Lining: 100% polyester. Liner: Matte face windbreaker 100% polyester plain weave. Lining: Omni-Heat Reflective lining 100% polyester. Insulation: Thermarator 100% polyester.