User Review: Patagonia Men's Nano Puff Pullover

Very happy with this lightweight, relatively inexpensive warmth layer. It packs down small and tight, is a very pleasant pillow, and functions great as a jacket.

I used it on a recent weekend hlking trip when I did not expect to need it. When I walked into an unexpected squall near freezing temperatures, I was glad to have it along. I was toasty in this and an LL Bean ski shell as the 50 mph wind blew and hail pelted my back for an hour. 

The Nano Puff was also relatively wind resistant - I liked it when worn over a t-shirt in 40 degree weather and 5-10 mph winds. I am 6'2" and 240, and was pleasantly surprised that the XL gave me adequate room and length.

I have read some reviews on REI where the owners moved to using this as a primary warmth layer. I think I will keep it for spring and fall occasions when I don't want a bulky warmth layer.