Cressi AIR, Premium Scuba Diving Snorkel Mask, Crystal Silicone, Made in Italy The Air mask is one of the adult high-end masks in the market suitable for scuba diving and snorkeling. Mask features inclined and inverted tear-drop lenses for improve downward visibility, a Cressi's patented design (US 6272693). Available in Black or Clear silicone. The clear is Crystal Silicone, a Cressi's trademark formula for avoid yellowing after years. The easy-to-use Integrated Buckles (Cressi patented technology) are integrated with the frame with a swivel system for quickly strap length adjustment. The mask features inclined and inverted tear-drop lenses for improving downward visibility, a Cressi's patented design (US 6272693). The field of view is particularly wide, laterally and in the lower zone. The lenses are made of tempered glass. The Cressi mask is designed and made in Italy by Cressi, brand pioneer in Scuba Diving, Snorkeling and Swimming equipment.