You can use the tech air or the Klim Vest, but it does not have the LED lights like the Taichi or ASTARS. They claim they just design the chest and back area to be more flexible for air bad deployment. The Kilim vest you need a yearly subscription for $120 to get the updates or you can just purchase outright without the updates. I know the Astars stuff seems impossible to get right now so for the mean time I will probably not do any of the air vests.