I was shopping for a mesh jacket to be used on an international riding vacation in tropical and sub-tropical Asia. I had three criteria. 1. airflow. 2. stealth. 3. practicality. This jacket hit all three targets perfectly.
First - The airflow. This jacket has huge amounts of mesh and flows a ton of air. This jacket does not have a removable liner - the AC is at maximum all the time. If you're riding on a chilly morning or heading up into high altitudes where temps are cooler, you'll want to layer up (a hoodie fits well under this jacket) or even wear your rain gear as a wind breaker.
Second - You can go totally incognito in this thing. Nothing about this jacket screams motorcycle apparel. I wanted to pack as lightly as possible for my trip, so I needed a jacket you could easily get away with wearing off the bike without drawing unwanted attention. There isn't an aggressive pre-curve to the arms, and the branding is kept to a bare minimum, with only a subtle, nicely embroidered A-Star logo on the left chest. The shoulder and elbow / forearm armor is amazingly light, thin, and flexible, yet still CE rated. Wearing it, you barely notice the armor, and people looking at you would never no it's there. I also upgraded mine with the Nucleon KR-2i, and couldn't be happier. It's amazing how much they've advanced from the old Level-1 RC insert, which was like wearing a plank on your back. The Nucleon is Level-2, much more comfortable, barely makes any visual impact on the jacket, and is perforated to maintain maximum airflow - which is why you're shopping for mesh in the first place.
Finally - practicality. Being on a trip with lots of riding and off-bike sightseeing on foot, tour buses, etc. It's nice to have pockets. I've been shopping other brands, but kept coming back to Alpinestars for their practicality. Pockets, pockets, pockets. The Luc Air has pockets everywhere, including Alpinestars new waterproof "Napoleon" pocket, which was ideal. I was in Asia. It rained nearly every day of my trip, and never had to worry about scrambling to save my phone because it was always safe and secure in this waterproof pocket. I also found the exterior breast pockets unexpectedly useful. I put my battery pack / power bank in there and, with a short USB cable, was able to run my helmet-mounted camera all day without ever having to worry about replacing batteries or missing a shot because I was tangled up in wires!
If I had to nitpick the only gripes I can come up with are these: Even if this is part of Alpinestars' "City" collection which prioritizes casual looks, they really could have included a pants-connection zipper or belt-loop attachment. Also, the waist should have finer range of adjustment. The snaps are spaced too far apart, so the waist adjuster goes from "a bit loose" to "way too tight" with nothing in between.
Other than these two nitpicks, I've got nothing else to fault the Alpinestars Luc Air. It nailed my requirements perfectly and served me very well on my trip.