Patagonia Men's R4? Jacket - Closeout - High off the deck on Warbonnet Peak in the immaculate Wind River Mountains, the naming of the range quickly makes sense. Our windproof and stretchy Lightweight R4 Jacket protects and warms with a Polarte? Windbloc laminate sandwiched between a low-nap polyester micro fleece face and a high/low grid polyester interior. Unlaminated R1 underarm panels (60% recycled polyester) enhance breathability and mobility, while a neck gasket seals out the elements. Seamless shoulders allow pack-wearing comfort. With three external pockets (the hand warmers stay clear of your harness), two internal drop-in pockets and a draw cord hem. Recyclable through the Common Threads Recycling Program.