The product is the Sena Phantom ANC motorcycle helmet. There is a critical, life-threatening manufacturing and design defect regarding its internal structure. Beneath an extremely thin layer of cheek padding, there is a 2-centimeter-thick, rock-hard plastic internal chassis (honeycomb-like rigid structure) on both sides of the helmet. This rigid plastic component does not compress, deform, or absorb energy upon impact. Instead, it creates a solid, non-yielding barrier directly against the rider's skull. During normal usage, this structure does not conform to the head and causes severe pressure sores and tissue irritation inside the cheeks within short periods. More critically, in the event of an accident, this hard plastic chassis acts as a dangerous focal impact point. Instead of dissipating crash forces like a standard EPS foam helmet liner, it transfers the entire impact directly onto the temporal/facial bones, posing an imminent risk of severe head trauma, skull fractures, and fatal brain injury. This rigid design completely contradicts basic helmet safety principles and ECE 22.06 / DOT energy-management standards. The defective helmet is currently kept in brand-new condition and is fully available for official laboratory inspection and impact testing upon request. An official investigation has also been initiated with the local Ministry of Industry and Technology regarding this batch. Sena must initiate an immediate global recall before this fatal flaw causes prevent