Mountain Hardwear Kor AirShell Warm Vest – Men's Pertex Quantum Air Insulated Vest with AirMesh Lining

This is the piece I didn't know I needed. On 30–40 degree morning runs it keeps my core warm while dumping just enough heat. The Pertex fabric blocks wind like nothing I've used. Worth every penny even at full price.

Warm, breathable, packs down tiny.

Excellent temperature regulation on bike commutes. The AirMesh lining feels great next to a base layer. Only wish the collar were a touch taller for really cold days.

The insulation and wind protection are legit — no complaints about warmth. But the cut is boxier than expected and I've got extra fabric pooling at the sides. Functional, but the fit keeps it from being a favorite.

I've tried a lot of insulated vests and most turn me into a swamp within 20 minutes of hard effort. This one actually breathes. The Pertex Quantum Air shell handles wind on descents, and the AirMesh lining seems to regulate heat really well. Wore it layering under a shell at 20°F last weekend and my core stayed toasty. Easily my most-used piece this winter.

The vest is warm and looks good, but the main zipper jammed on me three times in the first month. Frustrating for a premium piece. Customer service has been helpful, but the hardware quality needs work.

I got this for myself and loved it so much I ordered one for my husband. It's warm enough for winter walks yet light enough that I forget I'm wearing it. Great over a long sleeve for cold office-to-car commutes. The pockets are well placed and the whole thing looks sharp.

Takes the edge off on chilly rides and packs into its own pocket nicely. Durability has been fine after a full season. Would recommend to any cyclist.

At 65 I've learned to dress in layers, and this vest has become the centerpiece of my cold-weather system. It traps heat at the core without restricting my arms, which matters when I'm shoveling snow or hiking with poles. The fabric feels premium and the stitching is neat. My kids gave it to me for my birthday and it was the best gift I got.

Bought at 56% off, exceeded expectations. Fits true, warms up fast, looks great.

Carried this on a fall backpacking trip and it earned its place every evening. Light in the pack, quick to pull on when the sun drops. Wish it had a chest pocket, but no other complaints.