I broke a Fox Metah Medium helmet from a severe fall on my head, I didn't hit anywhere else seriously, the helmet saved me but obviously became useless. It's the first time I break a helmet because I had never fallen like that before, and I realized that the important thing is not to have the most expensive one or not to wear one because you're saving up for the most expensive one or for the sake of being cool. The cool thing is to be good and wear a helmet. Especially if you're bad like me :P. Truly a wonderful helmet and its quality was evident until the final fall. It was a bit tight, I had it for 2 years and lately they are releasing good and affordable ones. Knowing that Cube also produces good equipment, thinking with this logic, I searched for it and bought it for myself because I don't have a big head, 56.5 cm circumference, Medium size is just perfect and very comfortable. It even has a little room if my head was slightly bigger. It definitely fits up to 57-57.2. I got used to the comfort of Fox and Linok didn't disappoint me. It adjusts easily as you want and has a second adjustment on the sides to adjust it up and down, and it has a rear light, not necessary but a nice feature. The most important thing, MIPS like my previous one, it sits on the head without heating you up and without being loose, but because of this, it is also safer. Also, it has a very nice all-mountain style, I would say more, but it could also be called enduro. It seems durable and of course, very nice, I emphasize this for those who are into the sport, they will understand ;D. I recommend it to those who don't have a very big head, for kids and adults, although Cube has good helmets, I would also recommend Fox, Mavic, Specialized, Poc, Bell if you specifically want it to say adult helmet. It also has a cushion for the chin so that the collar doesn't bother you when you fasten it. The price is like that because it is considered a children's helmet. In terms of quality, it corresponds to much more expensive ones, exactly for this reason!!! The sizes are not Small, Medium (for kids), they are universal sizes, it's just that children and teenagers usually tend to have these circumferences. An adult can also have such a circumference, mainly women but also men, just like the corresponding helmets for adults.