The Patagonia Nano-Air Women's Light Hoody is the hooded take on Patagonia's breathe-through active insulation, and it may be the most wearable warm layer you own. It stretches, breathes and insulates all at once, staying comfortable whether you are climbing or resting.

Why we like it:

Adding a hood extends the coverage without piling on weight, tucking neatly under a helmet or a shell for extra warmth.

Features and Functions:

Patagonia fills it with 40 gram FullRange insulation, a lofted synthetic that lets air flow through for nonstop temperature regulation, under a stretch-woven recycled shell with a DWR finish. A snug insulated hood, zippered handwarmer pockets, and Fair Trade Certified sewing ready it for long, active days in the cold.

Fit and Sizing:

Slim and stretchy for layering, the hoody fits true and moves freely.

Bottom Line:

Reach for it on ski tours, cold trailheads and any high-effort day where you want warmth that breathes. It suits women who want one layer they never have to peel off.