Finally! I apparently have a very long oval head. I've tried Scorpion Exo covert, nice helmet, but too round (not oval, so there were pressure points on my forehead and back of my head). Then HJC i20. HJC helmets tend to be longer oval than Scorpion, I've tried several, but just not enough in this case.I actually had given up hope on finding a helmet with removable chin bar for my watermelon head, but just happened to try on a Bell Qualifier (full face) 2xl, and it fit well. I didn't need another full face helmet, but the the fact that it fit well gave me hope, so I tried the Broozer. Hallelujah! (Though Bell Pit Boss did not fit, even if I went up another size, hot spots at the forehead and back of head)It's not the quietest helmet around, owed in part by the removable chin bar, and the affordable price point, but it's very comfortable. I LOVE the quick release chin strap. The chin bar releases easily, but is solidify mounted when on. This seller includes 2 visors, one clear, one smoke tint, which are pretty easy to swap out. The visor does a good job of protecting the eyes when the chin strap is removed, just a little wind sneaks past depending on which direction you're looking, but not much comes up from under the visor. There's also enough room to wear glasses/sunglasses under the visor.Ventilation is good, one vent on the chin bar, another atop the helmet, and obviously with the chin bar off (the whole point for me wanting this helmet) it's great for hot days, or if you want to be able to eat/drink/scratch your chin/nose without removing your helmet.Also, go with THIS seller, I tried one other one here on Amazon, and they sent me this helmet in a Harley Davidson box, missing labels, manual, 1 visor. Obviously they sent a used helmet claiming it as new.I don't know if any bluetooth radios would fit, they'd have to be very small, I have another (gigantic) modular HJC helmet with it already, so I didn't even try with this one.Overall, I love the versatility of this helmet, looks great, comfortable, especially if you have a very long oval head. This is the best fit I've found.Hope this helps! Happy riding!