Not for big heads!
I ordered this helmet in XL, which is the largest available, and it was still too small. And the ear pads only covered half my ears. The only reason I'm giving this 2 stars is because Protec's sizes are not accurate. I'm sure if my head was smaller, this would be a great helmet. So, I then tried the Smith Maze helmet in Large, which fits my head perfectly. It seems Protec helmets run a bit small, so if you have a larger head, stay away! The Smith Maze is a much better option! Also, Giro helmets are an excellent option as well.