The most ventilated helmet Giro has ever created. The Ionos features 21 large vents. The vents, along with rear exhaust ports, push cool air over and around the head while forcing warm air out. It is constructed using Giro’s In-mold technology that fuses the liner with the microshell to create an ultralight exo-skeleton that is safe and durable. Giro merges the exo-skeleton with a subframe that is reinforced around the vents for added structural support. Giro uses their Roc Loc 5® fit system to keep the Ionos in place. The Ionos is available in several color options including a Livestrong, RadioShack and a 2011 Lance Armstrong yellow/black edition. The Giro Ionos costs $235.00. For more information visit www.giro.com.