I once had the OGK Aeroblade 3 (Kabuto), it was somewhat better than the three 300€ Shark helmets I had over time, but also more expensive, that's why I chose the Aeroblade 5. The helmet cannot be compared to the previous four, you don't hear anything from the wind, you have excellent visibility, it is extremely lightweight. Owner of ZX10

The helmet is awesome in all aspects, I highly recommend it.. specifically, I use it for trips with a cbr 600rr

ultra-lightweight
noise starts after 110 but it's not bothersome
has the aerodynamic patent and you can turn your head without a problem on the side and with many kilometers
the material seems quite good
Because it is lightweight and you can easily turn your head and because of the patent, you have better visibility
Overall, I think the vision is mediocre
very good fit in large, measured at 58.5cm
it had an anti-fog package
NEGATIVE: DOES NOT HAVE sun visor!
The design with the samurai is perfect
I found it for 265 with the sticker from 308 and it was a good deal
The 308 with the sticker is too much, I recommend it blindly in the regular version without the sticker at 265 I think.