Crystal silicone double-flanged skirt. Quick adjust ratcheting buckles. Extremely lightweight but rugged polycarbonate frame. Tempered glass lens. Flex Snorkel: Flexible drop away bottom section. Splash guard top to deflect water away on the surface. Snorkel retainer allows for a quick adjustment. Purge valve to assist with water clearing. Low profile exhaust section to ensures no water retention. Replaceable silicone mouthpiece. Made from high grade crystal silicone. Comes packaged together.