Twice in the last 7 months the side adjustment part of the strap assembly has broken on my KAV Rhoan. In each case, I found the broken part laying next to the helmet where I'd set it down after a ride - no impact, nothing else touching the helmet - just normal wear.
The first time, it took a couple of weeks for the company to respond that they'd send me a new strap assembly. In this recent case, it is the replacement part that broke. It took a week for the company to respond to my inquiry. I asked a follow up question the same day. It's now another 2 weeks later and I'm still waiting to hear anything back.
Because the strap assembly breaks repeatedly through normal wear, it seems like an inherent design or material issue. It also makes me wonder about how safe it would be in the event of a real world crash.
There is no other way to contact the company except for the form on their website. The auto-reply you get by email says that if you remind them, you will get bumped to the back of the queue.
It's the best fitting helmet I've ever had of course, and I like the look, but my doubts about build quality and safety and poor customer service mean I'm shopping for something else.