John T.wrote a review of Patagonia Nano Puff Pullover Insulated Jacket - Men's on January 31, 2013
Familiarity: I've used it several times
I bought this pullover to wear on cold days skiing in the White Mountains of NH. It has worked great on single digit and below zero days. It's light weight but under a jacket and over a base layer, it has kept my upper body warm and toasty. The smooth finish allows for freedom of movement as well. Several friends have also bought the Nano Puff pull over after seeing mine and agree that it's great on cold days riding chairlifts.