Aqua lung Infinity Mask The close-to-the-eyes frame design naturally increases field-of-view with excellent coverage upwards and downwards Optical quality polymer side lenses deliver a high degree of light transmission for an open, bright feel underwater Cardanic Joint Buckles rotate both up-and-down and in-and-out for a customized and pinch-free fit Counterposed push button activation makes strap adjustments fast and holds the strap securely in place once set. The system is also easy to use when wearing gloves Wide headpiece on silicone strap conforms to the user's head to ensure a comfortable, secure fit