Adult fitting. Incorporating the Atlantis Spree silicone mask and flex snorkel. Specifically designed (and thoroughly tested) for New Zealand conditions. Manufactured to the highest standards exclusively for Atlantis. Spree MS40 Mask: Medium fit. Single lens. 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. Snorkel retainer allows for a quick adjustment. Purge valve to assist with water clearing. Low profile exhaust section to ensures no water retention. Replacable silicone mouthpiece. Made from high grade crystal silicone.