TUSA Splendive II Mask features a 2 window design with wide field of vision and light weight for comfort Bi symmetrical lenses for easy installation of corrective lenses Special low volume design for snug fit and easy clearing The Splendive II TM 7500Q is very light with a total weight of only 6.3 ounces It fits close to your face providing an extra wide field of vision and is also quick and easy to clear Corrective lenses are available for easy installation