Men's Proton Vest from Arc'teryx is a lightly padded vest for men. The vest is excellent for all types of activities that require comfort and high freedom of movement - hiking, trail running, climbing and other outdoor adventures. Men's Proton Vest keeps the heat at the same time as it keeps the body ventilated via a constant air flow. The vest works just as well as a middle layer under a shell jacket as on its own.\n\nNarrow fitTwo hand pocketsChest pocket with space for radioFabric 1100% PolyesterFabric 284% Nylon, 16% Elastane Arc'teryx Men's Proton Vest Fluidity | Buy Arc'teryx Men's Proton Vest Fluidity here | Outnorth