Seeland Polar Max JacketSeeland Mens Polar Max Jacket The Polar Max is Seelands absolute warmest hunting jacket. The jacket is waterproof and has a WindBeater membrane, in addition to 250 gram wadding, which is the thickest available. It also features microfleece inside the jacket and the hood to retain warmth. Polyester lining in the sleeves makes arm insertion easy. The jacket features the ground breaking ThinsulateTM technology, which uses an insulating membrane