Montbell Down Jacket Men's Permafrost Light Down Parka With Hood - DRY-TECPermafrost x DRY TEC. The waterproof down parka. The Permafrost Light Down Parka with Hood (DRY TEC) fuses 800FP down with Montbell's proprietary DRY TEC waterproof breathable shell for wet cold conditions where most down jackets fail. Pinnacle materials 800 FP EX Down high loft expedition down DRY TEC waterproof shell Montbell's proprietary membrane Helmet compatible storm hood Where it shines Wet snow conditions, freezing rain, Patagonian shoulders,