In summary, I truly love the Mammut Eigerjoch Hybrid Jacket and give it a strong recommendation. Like all Mammut gear I’ve tested, the quality is very high and the design is extremely functional. This jacket is warm and weather resistant enough to serve as a light outer layer in most situations and breathable and flexible enough to be a nice mid layer under a shell. It feels and looks great and has exceptional mobility for a variety of activities. At $325, the Mammut Eigerjoch Hybrid Jacket doesn’t come cheap, but when you consider that you are essentially getting two pieces of apparel in one, the value proposition starts making more sense. I highly recommend checking it out either online or at your local Mammut dealer.