Horrible customer service! Sent four emails to their customer support email and never received any response. I found a phone contact number and reached out to them today by phone. Not only was the person very rude, but she could absolutely care less that I was not pleased with my purchase. She agreed that the helmet should not make a whistle sound but then followed up by saying "because it was worn once we cannot take it back"... my question is..."how do you know it whistles unless you try it out on the road". Guess I should have had my son run around the yard at 40MPH to see if he heard anything. Live and learn... they won't get any more of my money and I would suggest ordering from any other company than this one for your motorcycle needs. Way to many choices out there to deal with a company who does not stand behind their product!