We’ve read the reviews across the web for the Patagonia Nano-Air Light Hybrid Jacket and summarize the results below:

Universal Ranking

PeakScore: 89 (out of 100) 
User Rating: 4.8 stars   
Expert Rating: 3.7 stars
Number of Ratings Reviewed: 39

Pros & Cons

Reasons to buy:

User Reviews

• Perfect combination of breathability and warmth.
• Breathability allows me to travel uphill without soaking out from sweat.
• Ventilated back helps reduce sweating when wearing a pack.
• When coupled with a shell, this provides incredible warmth.
• Very comfortable.
• An amazing mid-layer jacket for high intensity activities.
• A good option when the regular Nano Air jacket would be too warm.
• More of a performance fit than the regular Nano Air.
• Good at protecting from the wind and still is breathable.
• While not windproof, it does block wind better than a traditional fleece jacket.

Expert Reviews

• Lightweight.
• Great breathability.
• Easily packable/compressable.
• Great for running and other high intensity activities in cold weather.
• Fabric feels great against your skin.

Reasons NOT to buy:

User Reviews

• The breathable back allows some wind in but is a fine tradeoff to achieve greater breathability.
• Fit is a little slim.
• Not as warm as expected – more like a very warm base layer.
• The waffled back fabric tends to get caught on things.
• The fit is too tight to layer much underneath the jacket.
• Sizing can be tricky.

Expert Reviews

• Doesn’t protect from meaningful rain and wind.
• The lightweight fabric is not extremely durable
• The jacket is no match for real rain or wind.
• Not stylish enough to wear out on the town (too technical looking).

Summary:

The Patagonia Nano-Air Light Hybrid Jacket provides solid warmth and breathability for high intensity activities in cold weather. It cannot be trusted as your sole outer layer if rain or wind is expected, but excels as a mid-layer in these conditions, or as an outer layer in cold, dry and calm weather.

Note: User rankings were reviewed across the web and expert rankings were reviewed on gearinstitute, outdoorgearlab.