Throw the Patagonia Nano Puff Men's Vest over a baselayer or under a shell and you add core warmth without bulking up your arms. This synthetic-insulated vest is light and packable, and it keeps insulating through damp, snowy conditions.

Why we like it:

Focusing warmth on the core is the whole idea, freeing your arms to move while your chest and back stay toasty.

Features and Functions:

Sixty grams of PrimaLoft Gold Insulation Eco fill the vest, a recycled polyester synthetic with P.U.R.E. technology, and its recycled polyester ripstop shell carries a DWR finish to shed light moisture. Zippered handwarmer pockets, an internal chest pocket that stuffs the vest into itself, and Fair Trade Certified construction keep it practical and packable.

Fit and Sizing:

The vest has a trim, layer-ready cut with sizing that hits true, and it sits cleanly under a jacket.

Bottom Line:

It is the pick for core warmth on the move, layered under a shell on cold days or worn alone in the shoulder season. Great for skiers who overheat in full sleeves.