This is my favorite new thing because of its sheer versatility. It’s easy to use this jacket in the fall and spring months because its breathability and lack of insulation keep you from being overheated. The Inertia peak is perfect for layering with just enough room for light to midweight fleece or (my other fave) Compressor Jacket from Mountain Hardware. All in all, I love the simple streamlined design – technical, not over-done and still with a strong, outdoorsy style.