Yup, it's officially puffy season. If you’re looking for a lightweight, highly packable midlayer that retains warmth when wet, the synthetic Revelcloud II is a great choice. It compresses down to the size of a coffee mug, and has a DWR-treated nylon face fabric that our testers report blocks wind up to 50 mph. Eco-bonus: The jacket's nylon shell and polyester lining are 100 percent recycled, as is 55 percent of its insulation. Get the Revelcloud II for $73.83 (50 percent off) in men’s and women’s sizes from REI, and then head out on one of our favorite shoulder-season hikes.