The Infiltrator Jacket from Outdoor Research is lightweight and innovative. The shell is made from GORE Military Fabric with GORE-TEX FLEX2FIT Fabric on the rest. I honestly can’t tell you what those are but I know they are durable in all weather situations and feature packed. The jacket is fully adjustable including the helmet hood. The pocket placements are ideal with hook/loop cuff closures and an elastic drawcord hem. The price tag isn’t cheap but when you’re buying military grade, forever guaranteed products, you’re totally ready to spend $800.