Have a nice vented leather jacket with liner but it's finally warm enough that even with the liner out and all vents open, it's just too much, especially stopped at a red light with no breeze and the sun shining on you. Got into a bad habit last summer of just cruising around in a T shirt and jeans. Vowed to get some type of summer jacket for protection purposes. Bought the Tenacity Mesh yesterday and I love it so far. Rode to the dealership in my leather and home in the mesh. Wow - like someone turned on a fan to keep me cool all the way home. I know the mesh doesn't protect as well as the leather but I got the elbow/shoulder armor that goes in it so it's a heck of a lot better than a cotton T shirt. Also it's silver so it's not quite as much of a solar heat panel as the ever popular solid black that Harley riders seem to prefer! I'll update if I find any shortcomings with this jacket.