I ordered this helmet here and hoped for the best. Sure enough the L/XL comes with adaptive inner foam lining that adjusts the helmet to a true XL. Great chin strap fit and very comfortable. Your ears are free to listen to music while you roller blade or skateboard or ??? and yet your skull is encased. You can stick stuff on the outside because it is completely smooth and not textured like some bike helmets. I especially like to put on a tiny rear view mirror with clamp. The other highlight is it is really well vented. I hate digusting sweat head. I am a grandma that loves her kick skooter, but I have to have a little dignity! You can add a visor if you want. Great helmet. Brain protection is super. 5 stars

Product offers only 2 sizes - large and small. Large was too small for me. Had to return. 2 stars

The threat of injury to a child's head suggests that we who are grand parents need to reduce the dangers to our grand children while they play. A helmut that protects my grandson's head from injury while he rides his skateboard makes sense when you consider the permanence of most brain trauma. 5 stars

the difference between the large and x-large is 58-59 with the small/medium at 55-56. huge range, i know.

way too small for me. 2 stars

I ordered this helmet to use while riding my moped to work. It is very stylish and looks good. If you have a big head this isn't for you. My fitted hat size is 7 3/8 and I am almost too snug for comfort in this helmet. Nonetheless it seems durable and well built. 4 stars