Giro Atmos Helmet 2013
Atmos continues to set the standard for high performance, matchless style, and comfortable fit. Its low profile silhouette, 26 Wind Tunnel vents, and benchmark in-mold Roll Cage make it a top choice for road, 'cross, and XC riders alike.
I've used several upper-end helmets from Bell and Giro before and to me this one ventilates the best. I definitely feel cooler on long, hot summer rides using this helmet compared to others I've used. Well made and lightweight. The pads wear out after a while, and Giro is good about sending replacements. Nothing bad to say here.