When youre worried about retaining warmth when youre working hard and sweating hard the Refuge Air Vest is your solution. Fittingly named after its VerticalX Air technology the Refuge Air uses adaptable insulation that keeps you warm when you need it and rapidly moves moisture the moment you start to perspire. Each Refuge piece is also amplified by ActiveTemp another thermo-regulating technology that keeps you cool dry and comfortable during high-exertion activities. Balancing just the right amount of insulation to hold warmth at your core the Refuge Air Vest combines the best of weather protective ruggedness with lightweight compressibility that packs into its own pocket.. . Pertex Quantum Air 59% recycled nylon 41% nylon 20D x 22D mini ripstop 100% polyester 50D warp knit tricot lining with ActiveTemp finish VerticalX Air 100% polyester insulation 75 g/m3. . Active Insulation. Water Resistant. Wind Resistant. Lightweight. Breathable. Thermo-Regulating ActiveTemp Treatment. . Zip Chest Pocket. Single Separating Center Front Zipper. Zip Hand Pockets. Left Hand Pocket Doubles as Stuff Sack. Carabiner Loop with Key Clip. Elastic Drawcord Hem