A new demi-jet with a very important strength: its size allows it to find a place even in the reduced saddle pads. The studied dimensions of the new Jet 7 approved demi-jet, solve the problem of the minimal underseat space available on some very popular scooters (from Honda SH to Vespa and Beverly 500 to name a few). To highlight the rear extractor, an element not always present on this category of helmet, which improves breathability, the interior completely removable, and the weight contained below one kilogram. The closure is managed by a quick release strap and micrometric adjustment. The interiors in hypoallergenic fabric are totally removable and washable.