I use the helmet for several weeks and am very satisfied. It is particularly important to me on a bicycle helmet that he is comfortable to wear and does not cause bruising. Furthermore, it must ensure sufficient air circulation between the helmet and the scalp to ensure that you sweat excessively. The helmet meets my expectations to my complete satisfaction. At just 190 grams total weight of this model is one of by far the lightest bike helmets. The helmet is in accordance with DIN EN1078 CE approved. I am very pleased with the helmet and can him a friend!