ColdGear Reactor intelligent insulation adapts to any activity for non-stop comfort & total versatility. Lofty insulation with a unique quilting pattern that traps heat, but still allows air to flow so you don't overheat. UA Storm technology repels water without sacrificing breathability. Smooth, ripstop woven body fabric is lightweight & extremely durable. Fleece side panels offer extra breathability & mobility. Generous 3-piece hood with ribbed stand collar for added comfort & coverage. Secure, zip hand pockets. Dropped, shaped hem for enhanced coverage. Ribbed cuffs.