So purchased one of these about 9mths ago... The sizing is mad! Or they sent the wrong size and will not admit it. I have a normal shaped 58cm head (!). I ordered the L as per their sizing chart…. No chance! Squashed my head ouch! I then paid for this to be swapped for an XL…. Up to this point, not too worried, just extra shipping charges hitting my budget! I Get the XL – How big!!!! Over a 2cm gap at the front…. Needless to say, this does not fit…. After 4 months of chasing them down for some help, they finally sent me a custom fit kit…. Or rather some random off cuts of foam they had lying about…. Do not be fooled into a custom fit kit – rubbish and does not work! You also have to rip out the liner which is over glued everywhere… I have tried to make this work…… It’s just rubbish! I am left with a helmet that does not fit properly and a company that does not care! Since all this, I have tried an Nvertigo V on in a L (someone else daft enough to buy one!)…. Surprise surprise it fits without any issues… Can only be one thing, they sent the wrong size originally….. I have since pointed this out to the “customer service” team – They don’t care and have done jack about it! Apart from this, the helmet shell is nice and the chin cup works…. Just do not expect a quality or customer service….. Wish I would have saved my money and bought a TonFly! I have given then time to sort things out, but they just don't care.