[Three-lens panoramic clear field of view] The snorkeling mask adds two lenses on both sides. The three-lens version offers a wider field of view. Our snorkeling mask features transparent flat lenses made of high definition premium PC material to prevent distorted field of view and eliminate underwater vertigo [Comfortable fit, anti-leakage] The double-layer silicone skirt is suitable for most people's face shape. It has good sealing and prevents water leakage. The food-grade silicone material will not cause irritation on the face, under the tip of the nose, between the eyes and on the forehead. [Safely close the nose] This way, it's easier to balance if you go below the surface, and it also prevents you from inhaling any water through your nose while snorkeling [Easy to adjust and connect] The mask features a wide headband and touch adjustment buttons. The mask comfortably wraps around your head and is also easy to adjust if necessary. The breathing tube is very easy to install and move into place if needed Package includes: 1 mask main maintenance Clean the mask with water after each use Place the mask in Conflictm fresh water for a few minutes Avoid corrosion after breathing tubes at sea Avoid using soap or detergents to increase visibility Keep dry after use Please do not play the mask directly in the sun. Do not clean the fa lenses with a towel, the glasses cloth is better. Do not let the PLA FA lenses come into