It is not worth the 450 euros I bought it for at all.
I kept it for less than a year.
The noise it makes from the ear caps drove me crazy for the very expensive HJC intercom.
Also, the interior is very poorly sewn and the internal visor did not rise easily; I had to spray some lubricant on the mechanisms to soften it a bit.
(I also bought the F 71 for my girlfriend, and that one is much better quality in every way.)
It pressed down on the back of my neck to the point where my whole head went numb. (A second person tried it and said the same.)
I had an HJC that cost 250 euros, and it was 20 times better than this.
I will buy the GT Air 3; I hope it is better.

I really didn't expect such poor quality from HJC. In this price range, such noise cannot be justified in a closed helmet. We are talking even for use with a scooter at low speeds. Yes, it has good build quality and the visor is very convenient, but the noise is unbearable. Don't waste your money, it's a shame

The helmet is very good, it fits perfectly on my head, it feels like I'm in my living room (very comfortable), very good quality materials, very good ventilation, quite aerodynamic, large field of vision.
BUT, while the helmet seems to be very quiet in terms of sound insulation, I noticed that even at low speeds of 30+ km/h, there are incredible swirls in the ears!
There is no air leakage from any vent or from the visor, there is no problem, that's how it is designed. It has two low caps on the right and left that open for the intercom system, which is made for this helmet, but even from those caps, noise goes directly into the ears. If I put my hands on the holes, I can't hear anything and the helmet is completely quiet. I read on Reddit that others had this problem and they put tapes on the holes and other solutions.
I reached the point of considering returning the helmet to the store where I bought it because besides the noise, I noticed that the visor doesn't lock when you put the pinlock on, it can be seen in the photo. The factory pinlock, which comes in the box with the helmet!
The helmet has a mechanism where the visor closes, locks, and has something like a lock that you have to press a button to open. The visor doesn't lock with the pinlock on.
In the end, the store sent me to the dealership where they told me that the noise issue is due to my riding position and that HJC never makes mistakes, etc., and as for the visor, they kept the helmet for a few days, tried other pinlocks, tried other visors, and saw that it's exactly the same with the other RPHA 71 helmets, and they simply told me to go and take it back as it is and that they sent an email to HJC and will send me an email when they have a response. Meanwhile, I also sent an email to HJC Europe and waited a week and a half for a response, trying to see if they can find a solution.
I'm crying my money on a touring helmet where above 80 km/h it feels like an airplane taking off in your ears.

Edit: HJC Europe told me to send the helmet to France for inspection, but I didn't want to go through the process.
The dealership in Greece still hasn't given me any answer regarding the visor lock.

Average to good aerodynamics, the fastening of the visor is a bit difficult but it easily unfastens with a finger, I just don't know how long it will hold up.
Very good ventilation, good build quality, and the tinted glass for the sun is perfect. What made me regret spending my money was the noise from the air coming in from the chin and at low speeds.

Excellent and high-quality helmet. Very good ventilation. It comes with a free anti-fog visor. I use it on a scooter with a fairing, mainly within the city but occasionally on the Attiki Odos highway. It is quiet compared to the rpha11 that I had before, which lasted me 7 years, but from speeds of 100+ there is a moderate noise at normal levels, which may be due to removing the ear slots for intercom. The only negative is its weight. Due to the new ECE 22.06 specifications for increased safety, the weight has increased. Also, the sun visor and the internal mechanism of the helmet slightly add to the weight. In size large, the weight is 1600g. Also, the visor requires a little getting used to when opening and closing. The mechanism has strong teeth, keeping the visor open at higher speeds, but it requires some practice to handle it. My brother has the Shoei GT Air 2 in medium, which weighs 1500g. So, the differences are small. It also has a slot for intercom. I had the Interphone F5MC, which does not fit the new helmet, so I bought the HJC Sena 21B, which is compatible.
Also, I should mention that when measuring my head, it is for a medium size. The Shoei GT Air 2 that I tried on fit perfectly, but the HJC RPHA71 is tight around the temples, so I went for a large size. So, keep in mind that you may need a larger size.