About this item Panoramic View Snorkel Dive Mask Adopted impact-resistant tempered glass with high-definition vision and a large field of view, the snorkel goggle provides you with a clear underwater world and is good to withstand deep water pressure. Advanced Dry Top Snorkel Adopting a float valve at the top of the breathing tube can completely seal it to keep water out when underwater and would open to let you breathe easily when above water. The one-way purge valve helps to clear out the water leaking into the snorkel quickly, so you can enjoy easy and unobstructed breathing while diving underwater. Food-grade Soft Silicone Material Mask is made of soft silicone material, comfortable and flexible. The food-grade silicone mouthpiece can be comfortable in the mouth, which allows prolonged use without any discomfort. The nose pocket is a beginner-friendly design to avoid getting water into the nose by mistaken breathing with the nose. Comfortable Silicone Skirt and Adjustable Head Mask Strap Made of soft food-grade liquid silicone, the skirt of the swim mask will not cause pressure on the face, fitting the face perfectly to prevent water leakage. The side adjustment mask strap buckle is convenient, gently press to adjust the length of the mask strap for different head shapes. Lightweight, Portable Adult Snorkeling Set for Snorkeling, Swimming, Diving Specifications: Type: Snorkeling Equipment Material: Silicone+PC+PVC Snorkel length: 43cm/16.9inch Mask Size: 17*9.2cm/6.69*3.62inch Net Weight: 400.0g/14.11oz Package included: 1 x Diving Mask, 1 x Snorkel NOTICE: The new mask needs to be treated to prevent fog. The methods are as follows (each method works) : 1.Soak the inner lens with children's shampoo for 10-20 minutes and rinse off with water. 2.Use toothpaste without particles, wipe some water in the mirror, and then wipe in circles, until the mirror is smooth and smooth, rinse clean, no greasy feeling. 3.Only for tempered glass lenses. Lighter evenly burns the inner tempered lens until black appears, pay attention not to burn the silica gel, and clean it after cooling, which needs to be repeated several times. Maintenance: Clean mask with fresh water after use every time. Put the mask in warm fresh water for some minutes After sea snorkel to avoid corrosion. Avoid to use soap or detergents to make visibility well. Keep dry after use. Don't place the mask under the sunlight directly. Don't use towel to clean the face lens, glasses cloth Is better. Don't place face lens touch the hard surface. ",