-More lightweight than a piece of A4 paper
-Extremely "cool" due to the natural ventilation system of the head
-Protection AND perimeter of the head (very important).
-Smart and beautiful design
-The package includes a leaflet with detailed instructions for use, as well as 4 additional adhesive "pads" for extra padding inside the helmet (optional)
-Fits the size chart (one size fits all).
However, regarding the last point, because I have a long and relatively large head, adjusting the straps is possible (almost borderline), but I feel pressure on my forehead from the helmet frame, which cannot be adjusted. When I try it with a hat in winter or if there is any other issue regarding the fit, I will add it here. However, it is a top helmet with many significant advantages.

***Update: I tried it with a hat, normally, in winter conditions. In the end, there is no problem with this fit, as long as the hat is thin, like the Grivel "liner" which is worn for this reason. Perhaps the only "issue" with the helmet is that it is too ventilated for winter, resulting in the head getting very cold when the wind gusts are strong in combination with the bitter cold. The problem is somewhat alleviated by wearing the hood of a windbreaker jacket over the helmet.