Proton LT Hoody Men's is a synthetically insulated jacket from Arc'teryx that is perfect as a lightweight outer garment or as a warming mid-layer under a shell jacket. The Coreloft filling offers heat without overheating and the outer material is breathable. The hood is helmet compatible and easy to adjust.\n\nFabric: 84% polyester, 16% elastaneLining: 100% nylonFilling: 100% polyester Arc'teryx Men's Proton LT Hoody Forcefield | Buy Arc'teryx Men's Proton LT Hoody Forcefield here | Outnorth