It's easy to forget that I'm even wearing a coat when sporting my Thermostatic Jacket ($200) by Mountain Hardwear; it's that lightweight. The synthetic insulation keeps me toasty without weighing me down. You can wear it alone, or under a shell on rainy days. I wore mine all over Yosemite in temperatures in the 30s and 40s and love this jacket for hiking. The jacket can be stuffed into one of its own pockets for stowing in a backpack, which also makes it perfect for travel. The Thermostatic Jacket is also great for short runs for blustery days as Winter blends into Spring.
— Susi May, fitness director