Best lightweight backcountry jacket on earth
If you do anything in the backcountry, or anywhere in the universe for that matter, this is the jacket.
Good for a wide range of temps using various double layering strategies. Blocks wind, extremely comfortable even by itself. Top quality. Simple construction. The Schoeller extreme fabric is incredible.
If you've never tried it you owe it to yourself to do so. You send all your old fleece jackets to goodwill. Simply no comparison.
Ridiculously thin, but surprisingly comfortable by itself down into the '40's, layered to much lower. Well below freezing. Add a gore tex shell on top or a down jacket, and it does it all. Perfect fit. Comfortable by itself into the '60's as well.
Incredible breathability from inside to out, but blocks 95% of the wind. Easily worth the price of admission condering all it does, and all the garments it replaces.
You still need a warm jacket to wear alone out in town, etc. when the temps drop and you don't feel like layering. But anyother time the serendipity does it in comfort and style.