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.