This product cannot be used as safety glasses. Please avoid using it during strenuous sports. It can prevent glare from sunlight during the day and glare from water surfaces (reflected light), and it can also protect against harmful ultraviolet rays during normal use, but it does not have any other protective functions. Regardless of the shade of the lens, avoid looking directly into strong light such as the sun or welding, or using it in tunnels or dark places. Please note that the LCD screens of car navigation systems, mobile phones, instruments, etc. may be difficult to see depending on the model and viewing angle. When not in use, store it in a case or in a place out of direct sunlight. (The lens has a dimming function, so if you leave it in a bright place, the dimming may deteriorate due to repeated shading.) Make sure to use one that suits your face appropriately. Please note that if you use this product through tempered glass such as a car windshield, interference colors due to glass distortion may be visible. Do not place it in a high temperature place or mix it with metal that could scratch it. Please understand that there may be a difference between the image and the actual color due to the nature of the camera or monitor.