Charles Owen Luna Hat Liner. Some Charles Owen helmets now feature a fully removable headband, which is machine washable and replaceable. The helmet liner is attached using premium hook and loop closure to ensure that no pressure points exist to cause the rider discomfort. Charles Owen recommend riders use these replacement headbands to refresh their riding hat and ensure a snug fit. Please note replacing your headband does not extend the protection offered by your helmet. It's essential that you replace your riding helmet after five years. Made in the UK.