The Bell Scout Air is one of the lightest helmets on the market. At 800 grams, it is one of the most comfortable open faces money can buy. That doesn't mean you have to compromise on safety though: the Scout Air uses Bell's Tri-Matrix composite shell and is ECE homologated. Bell produces the Scout in no less than 5 different shell sizes so it has a low profile and optimal fit. This helmet is only certified for use on UK and European roads.