Your skin is about 93 degrees. If you allow 94+ degree air to blow over your skin, you're actually just heating yourself up. So I basically never wear a mesh jacket anymore, and instead a very good GoreTex jacket with vents as needed. PLUS, practice the wet sleeves evaporated cooling technique to cool my body down while riding. Check out the Iron Butt Assoc websites for quality scientific information on keeping cool during hot temps. You won't need a rainsuit with GoreTex gear. I've been very pleased with the Klim gear. And yes on synthetic wicking shorts and tees, thin fleece sweatshirt, and on the heated liner with a thermostat.