The Patagonia Nano Puff is a classic go-to lightweight layer for rock climbers, alpinists, and hikers alike. This minimalist jacket is ideal for clipping to a harness or tossing into a backpack - it compresses down to the size of a big deli sandwich, while still providing an excellent warmth-to-weight ratio. Although it doesn't have some of the cozy features that other jackets offer, it is an incredible workhorse piece that you can quickly toss on during a big adventure. Layering perfectly under a shell, this thin and lightweight jacket works great as a midlayer and provides enough warmth to stand alone during the warmer months. We like its basic outdoorsy look, but don't admire its cheap stitching and faulty zippers. If you're looking for a solely technical piece that compresses super small while keeping you reasonably warm, then the Patagonia Nano Puff is a great option. However, the new Patagonia Micro Puff, our Notable Mention for lightweight adventures, is even better.
While the Patagonia Nano Puff and Micro Puff share similar features, the Micro Puff proves to perform better than the Nano Puff in most metrics. We loved its uber-light design that compresses down even smaller than the Nano Puff. Also, we noticed the jacket surprisingly insulates a little bit better-offering 65-grams of PlumaFill Gold, in comparison to the 60-grams of PrimaLoft Gold. That said, the Nano Puff provides better wind resistance while their water resistance properties are about on par. If you're looking for the lightest jacket out there, the Patagonia Micro Puff is our notable mention for lightweight adventures. If you're not willing to pay $50 more for this lightweight contender, the Patagonia Nano Puff is a wonderful option for similar trips. Wear it through the Fall, Spring, Winter, and Summer on all sorts of adventures.