The Copper Moth FlexAir jersey is not much different on paper, but I noticed two standout updates that I thought were improvements over the standard FlexAir jersey. The updated jersey felt like it had a shorter length arm when on the bike, which I liked. The standard FlexAir seems long and bunched up near my glove, but the updated jersey is a little more snug around the forearm and not as long, so it didn’t have any bunching. With that being said, the updated cuff is not as tight around the wrist and lets air flow in more than the standard FlexAir. Again, this jersey is super light and feels like you’re not wearing a jersey, so make sure you compensate for the correct weather on your ride.