I’ve only had to buy three helmets in my life, basically changing it every few years when the insides wear out, as I’m just an occasional passenger on my husband’s vespa. Motorama is one of the city’s major motorcycle accessory supply stores, so they have all sorts of technical clothing as well as a huge variety of helmets, from 60 euros to 3000 euros(not kidding). The helmet section has a display and you’re not allowed to touch, so you have to wait to be served — which seems annoying, as it can be pretty crowded on weekends — but the service is really good when you do get it. The guy who helped me was dedicated JUST to me and very, very patient as we had to find something to fit my apparently miniscule head. He brought me anything he thought would be small enough, always choosing the lowest prices too! In the end I got one I’m really happy with, and he accompanied me to the cash and gave me an extra bit of a discount on it.