Have the Aerostich Roadcrafter one piece, it's great as for being hot don't think so as long as I am moving it's fine, remember this is a four season suit that means compromises. Will not say I do not sweat when wearing this but I do not think there is a product out there that will not make you sweat unless you like shorts flip flops and a muscle shirt when riding. If I was you, would research the heck out of it, sport touring web sites and forums, BMW forums, think they have been making this suit for twenty eight years there has got to be numerous reviews of it out there and I mean reviews by individuals and companies. Eight hundred dollars, will find out the information myself, suggest you do the same so your not disappointed!! The information is out there. Good Luck!!