Material optimization: The main body of the full-face diving mask is made of Silica gel, a material with excellent aging resistance, sunlight resistance, water resistance, UV resistance, etc. which not only can extend the life of the mask, but also bring safety protection to divers in cold and contaminated waters. Greatly increase the diving depth: mask is only suitable for shallow diving at a depth of 3 meters, while the one has a maximum diving depth of 50M. diving mask application field extends from snorkeling, recreational diving to commercial diving and technical diving. To your safety, we recommend diving at a shallower depth of no more than 30M. Accurately match the respirator:The mask has a built-in secondary regulator, which allows you to breathe freely underwater with the respirator. the latest mask is more accurately matched with the air cylinder. Bring portable air scuba tank or traditional cylinder, and start diving trip to feel the unprecedented pleasure. Colour:black Material:Silica gel Package Contents: 2 x Scuba Diving Mask Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.