I have a 3xl head and need a big helmet. I took a chance and ordered the 3xl, flat black style. Not very noisy, provided great wind protection and I really liked the drop down sunglasses style visor. The cheek pads were tight on my face so I took them out and it fit much better. Comfortable with out the cheek pads. I wore the helmet for 20 mins and it felt like my head was being squeezed from the front and back. Insta- headache! So I pulled back the padding and sanded the foam back until it custom fit my head. took about 2 hrs to get it right. Now...the helmet fits like a glove and I wear it all the time.