1、High light penetrability&large view angle, make you easily enjoy all the things under water. 2、Professional tempered glass optic, more pressure-proof 3、Adjustable side buckle - easy to adjust the tightness, enjoy comfort just by one hand. 4、Anti slip - non-slip structure for nasal position, convenient for underwater pinch pressure balance. 5、Physics streamline design, more comfortable, provide high performance. Features: High light penetrability&large view angle, make you easily enjoy all the things under water. Professional tempered glass optic, more pressure-proof Adjustable side buckle - easy to adjust the tightness, enjoy comfort just by one hand. Anti slip - non-slip structure for nasal position, convenient for underwater pinch pressure balance. Physics streamline design, more comfortable, provide high performance. Made of superior environment friendly material, non-toxic and odorless. Specifications: Item: Diving Mask Material: Silica Gel, Tempered Glass Application: Diving, Salvage, etc. Size: Approx 16*11*7cm/6.3*4.3*2.8inch Gross weight: Approx 220g/7.8oz Package list: 1 * Diving Mask 1 * PP Bag Note: Please notice that breathing tube is not included!