Many times new technology does not translate into better product. Not the case with this helmet. It's insanely light, doesn't look too bulky when wearing and is designed to protect your head much better than your typical half-shell helmet and almost as good as a full face helmet.One drawback if you could call it that is it does run one size small. I normally wear a size large for the majority of big bame manufacturers and I had to return the size large I initially ordered and exchanged for an XL. My head measures 23 inches and the XL fit like a glove right out of box. Included with helmet is different size pads that allow you to customize fit. Also of note is this helmet does not have the standard dial at the back of the helmet that allows you to tighten. To be honest, it's designed so you don't need this feature and I am quite confident it we would stay in place in the event of a crash.Being transparent, Fox's sizing chart for this model helmet is speced different than most of their other helmets and chart showed I am an XL.I we as r this helmet when riding my trail and enduro mtb's. Vents are well designed and allows plenty of airflow to keep you cool. Speaking of cool, the magnetic headstrap lock mechanism is a marked improvement over out dated clip closures.