Caberg Riviera V4 X Alpha 噴氣頭盔

The helmet shell is compact, lightweight, and beautifully designed.
However, it requires modification to fit the shape of my head. Since I am Japanese (Asian), the helmet does not fit my head shape perfectly. If you choose a helmet based on head circumference, you will need to modify the interior.
You will need to trim the styrofoam sections on both sides at the back of the helmet where they come into contact with the inside of the helmet.
Additionally, since gaps will form at the front and back, applying firm foam to the area where your forehead touches the front of the helmet will eliminate the front-to-back play and improve the fit.
Trimming the styrofoam may reduce the helmet’s impact resistance. However, modification is necessary if you are prepared to take full responsibility for the result
Since the sides open slightly outward, you can wear a helmet while keeping your glasses on.