The Rpha 91 from the company HJC is a flip-up helmet, widely known as "flip-up" or "openable" as the front part of the helmet can be lifted. Because it is openable, it does not offer the same level of safety as a full-face helmet. It is usually a convenient choice for people who make many short trips with several stops daily. It is made of Composite Fibre, that is, synthetic fibres that make it elastic and resistant to shock absorption. It fastens with a microlock, type buckle which allows you to fasten it easily and quickly. The helmet has the new European type "ECE 22.06" safety specification certification, which ensures that the helmet is tested at 18 impact control points instead of 6 as before. It is pinlock ready, which means that there is the possibility of installing an additional accessory for the visor that helps prevent fogging during the winter months. The anti-fog film is not included in the package. Additionally, it features a sun visor, which is an internal sunshade membrane, like glass, for protection from the sun.