Mountain Hardwear  Kor AirShell Hooded Jacket - Men's

I love this jacket. I live in South Dakota and our weather is all over the place. I wear it over a fleece for trail running or mountain biking on cold or gusty days. If I get get too warm, I take it off and clip it to my running belt or biking hip pack. It has done well in light rain also. Extremely light weight and stowable. I am 5' 11" 175 lbs athletic build and Large is great.

Great windbreaker. Fit is perfect, very lightweight and just the right length. Would definitely recommend.

Sent the wrong size and color - needed to return it, not sure how this happened…

Great jacket, lightweight, repels the sun, and is nice and breathable

To;Dr—it’s super good enough. I have owned the first iteration of this shell which was called “Airshell” about 4 or 5 years ago. Since then I’ve used it climbing in Redrocks and JTree. As well as just a light weight pack able shell I keep in my fanny pack. It’s so versatile that I’ve built a lightweight pack able layering system to go with it: Backcountry Highloft Hoodie and Adidas Terrex Primaloft Vest. It is roomie enough to fit over these layers and yet trim enough that when crack climbing it’s not impeding your vision. Breathability. I don’t have the numbers. But it’s plenty breathable. I wear it by itself as a sun covering as it’s rated 50spf. Durability. Its design brief is a ultralight pack able wind shell. So I wasn’t actually having high expectations for its durability. But having survived climbing trips to redrocks and jtree im very impressed. It seems to do quite well against rock abrasion from the sand stone and lime stone features of the aforementioned locations. I wouldn’t trust it to hold up to crack climbing in Yosemite or where you might encounter ice edges. Again these hard razor sharp edges can slice through many shells so be careful around those types of terrains. And though I’ve done hiking in desert climates. I didn’t have go cross country where I’d encounter cacti. Or trees either spines and needles. Again you’d need Goretex Pro 1000 denier type durability to withstand those types of plants. Comparison. North Face Summit Series Off Width Shell. Janji Zephyrunner Shell. Between these three jackets you have the range of hood design that are represented by the market. On one end you have the north face option which is a technical over helmet design. In my opinion for this type of jacket this is overkill. Especially because it directly impacts the packability of the jacket. To the other end you have a very basic almost 90s og hood design of the Janji which is oversized and then offers a simple Velcro adjustment on the back of the hood. We can do better than this. There’s not a spot where you use the Velcro that will both keep the hood in place but out of your field of view or keep it fr being blown off your head in strong wind. This is where the slim fit hood of the Airshell really shines. It has an elastic cinch on the upper third of the hood. This couple with the tight slim fit of the hood keeps it in place on your head and out of your field of view. The stretch of the jacket also means that it turns with your head. The sizing of the hood is perfect as well. Underneath it’ll fit a skull cap, fleece beanie, or baseball cap. If you climb or ski, it’ll easily fit underneath the helmet and the soft shell feel also means that when you do it it’s not scratchy or scraggly like some harder soft shells. Pockets. I’m not a huge fan of the pocket design. They work but as a technical shell where you’d want to hike, climb, skin track in the winter, even ski dive in, or other outdoors activities the basic pockets that are placed on the lower hem so that they’re guaranteed to be covered by pack straps or a harness is a design oversight. This is where the north face option is better. Also as a running shell why not have dual chest pockets? Keeps it lighter weight and keeps the items closer to your center of gravity when running to minimize jostling.