Bell and Giro, owned by the same company. Not sure if they are made at the same factories. I tried on several Bell's and Giro's and the one thing I didn't like about both of them are the way the straps are twisted. They don't lay flat on the side of your face and they are very uncomfortable for me. I ended up with a middle-of-the-road Specialized helmet (around $75.00). Since I have not owned a Bell or a Giro, I can't tell you if mine is cooler or not, but it fits better and the straps are not uncomfortable like the Bell's and Giro's. I live in Florida and it gets very hot and muggy and I don't seem to have a problem with the ventilation on the Specialized.