i love my vertigo's, ive never had a problem in the heat, the vents work pretty good, and you can close them too. i ride in the rain all the time, and ive never had one drop get inside. Sidi's (any kind) are extremely comfy, i would wear them daily if i didnt have to worry about wear and tear. Ive wrecked twice in mine, highside at 80, lowside at 40 and i slid for 20 feet or so. The plastic is scratched, and thats the only thing it did, i walked away from both, the next day, everything was sore except my head and everything from the knee down. as a suit goes, i would reccomend the gericke celtic suit from sportbiketrackgear, when i was shopping, i didnt see any negative reviews, i saw quite a few at the track, these suits are built too, armor and thick padding everywhere. sptg is the only place to get it, but just look at the sizing chart, they are true to that, and they have awesome customer service. i think they retail for 700, i got mine for 300 on clearance because it was the smallest size they came in, and it was bright green