VisionFlex Midi LX Mask: Frameless construction. Bi-color silicone technology. Tempered glasses. Slanted lens. Wide field of vision. Quick-Fit buckle system. Reusable mask box. Ideal for small and slim faces. AirFlex Purge LX Snorkel: Anatomic silicone mouthpiece. Ultra purge silicone valve. Flexible corrugate tube zone. Easy and quick fix clip. Splash guard with purge channel.