The Volt Herbie V.24 by O'neal is a jet helmet, which, thanks to its open design at the bottom of the face, can be put on and taken off with ease. It is considered one of the lightest types of helmets, however, it leaves a large area of the face uncovered, therefore it is less safe compared to a full-face helmet. It is made of composite fibre, that is, from synthetic fibers that make it flexible and resistant to shock absorption. The helmet has the new European safety certification "ECE 22.06" and American DOT certification, which ensure that the helmet is tested for drop, impact, and object penetration.