When temps drop quickly and you need warmth on the fly, just grab the zone-mapped insulation of the Flyloft Jacket from your pack and get back to the hike.Regular Fit.Plainweave shell:• Ultralightweight shell compresses for easy packability into Pack-It-Pocket.• Contoured, grid quilting improves range of motion.• 9.3 oz/yd² / 265 g/m² fabric weight.Lightweight, synthetic insulation mimics the high warmth-to-weight ratio of natural down.Stand collar with zipper garage.Full-length zip with inner draft flap.Long sleeves with elastic-bound cuffs.Zip hand pockets.Inner security pocket.Straight hem with elastic binding.Shell and Lining: 100% nylon;Insulation: 100% polyester.Machine wash and line dry.Imported.Measurements: Length: 24 inProduct measurements were taken using size XS (US 0-2). Please note that measurements may vary by size.