I've tried every jump helmet on the market! The XXL "Mindwarp" is the only one that fits. I've been using an XXXL snow ski helmet that works OK but has a few to many places that could catch a line. The "Mindwarp" XXL is a bit tight but I think a few more bakes in the oven will take care of that! For those of you out there with large brains - TRY THE "MINDWARP"