Snorkel The mouthpiece is made of food-grade silicone, soft and tasteless. Automatic water stop valve can prevent choking when diving. Soft threaded tube can reduce mouth fatigue. The bottom valve adopts an open design for easy cleaning. Diving Mask The skirt of this mask is made of liquid silicone and has a double-layer waterproof design, it can be well sealed and will not bring pressure to the face, you will not feel uncomfortable even wearing for a long time. High-definition tempered glass allows you to clearly see underwater creatures, explosion-proof and scratch-proof, with good safety performance. Once broken, the mask will shatter into obtuse-angled pieces, reducing the risk of major accidents. One-way purge value ensures anti-fog. In case of water, we can drain it through the one-way purge value. Package list: 2 * Mask 2 * Snorkel 1 * User Manual