ArmorSource AireLink Prime Premium Dial Retention Black One Size. The AIRLINK PRIME offers the unique ability to simultaneously adjust the helmets exact fit to the users head and chin with its revolutionary lacing system controlled by a rotary dial incorporated into the retentions nape pad. Designed for Military Special Forces and Law Enforcement operators this innovative boltless ballistic helmet retention system is combat ready and provides the highest level of performance ergonomics and functionality. Specifications for ArmorSource AireLink Prime Premium Dial Retention: Manufacturer: ArmorSource Size: One Size Weight: 0.24 lb Features of ArmorSource AireLink Prime Premium Dial Retention Works in conjunction with ALL ArmorSource Bolted models. Works in conjunction with ALL supported suspension systems. Works in conjunction with ALL ArmorSource supported accessories. Compatible with common communications gas masks visors Glasses ear protection and mandibles. Package Contents: ArmorSource AireLink Prime Premium Dial Retention ArmorSource RALPR5-BK: AireLink Prime Premium Dial Retention Black One Size