I bought the helmet due to the good reviews and I find him from the processing very well and also the shape and color are great. Unfortunately, the helmet does not fit in the selected size S (55-56 cm). Indicated was to determine the correct helmet size in the description: Head circumference + 1 cm = size of Helms.Somitm So would it in my 55 + 1 = 56 cm Gr. Be S. However, the helmet is me still 1-2 cm wide. I assume that the helmet has a different size than indicated on the label. Actually there would Gr. M are in it, since apparently been fit all this purchased helmets. I probably unlucky.