The helmet has been designated a lady's bicycle helmet up to a size of 57 cm. In Protalen Test.de etc. He is being touted as the winner even up to a head circumference to 58 cm. I myself have a head circumference of 57 cm and unfortunately then the helmet does not fit properly. The strap (plastic holder with set screw) is located so high in the mind that the helmet stays in place at the slightest movement. Overall, the tether falls also puny in with adjustment for the back of the head. From other helmets Ked example I know vertrauenserwekende constructions. But as I said, the helmet does not fit me in spite of the reported head size.
My lesson: a helmet you should try, as ordered only through the internet, if you previously had the opportunity to view and fitting. After you buy the bike helmet vorranging unattainable because of the nice Desings, but about safety. And so are fit and handling the most important thing.