Low volume dive mask featuring lightweight and scratch-resistant polycarbonate PRO frame. Suitable for virtually all face shapes and sizes. Tempered glass lens is rated for use to 330' depth and gives broad field of vision. Integrated Easy-Adjust swivel buckles plus high grade Silicone gasket and twin head strap provides comfortable yet watertight fit. Accepts any Inzert (tinted Inzerts not recommended). Supplied with FREE protective hard case.. For free diving, SCUBA diving, and other under-the-surface activities.