This helmet I've seen, tried and he has so perfectly fit like no other. Many helmets followed to try on, but it was just perfect. Although there were some helmets, weighing less than 305g, it seemed more difficult, because it has always pushed somewhere. The helmet can be adjusted just fine with one hand, not suppressed and appears on my head shape almost tailor-made. Also important are the well-made fly screens, so that you do not have a wasp or bee sitting while cycling helmet still in between the hairs ... Pronounced good interiors. The helmet is not only externally provided with sufficient ventilation options, but also inside where can pull through with aussreichend channels that air. The Polsterchen are attached with velcro and washable. The air that comes forward through the ride in the helmet can also escape through the three great ventilation possibilities at the back. When compared to other helmets ventilation was here really optimal. A special treat (I noticed only at home) is the LED light at the back :-).