Change your point of view. A low profile family of masks for the pro, the semi-pro, and all lovers of the sport who want to see the underwater world more clearly. Accepts optical lenses and comes standard with our Neoprene Comfort Strap. Same great fit and style as the Ion with side windows for increased peripheral vision Sturdy lightweight frame Low volume design for wide field-of-view and easy clearing May be easily fitted with optical lenses from -1.5 to -8.0 diopters in .5 increments 100% liquid silicone for comfort and long-life Tempered glass lens for safety Easy adjusting buckles for convenience Neoprene Comfort Strap included