100% brand new and high quality After wearing the glasses for 10 to 12 minutes, when looking at a stationary object (such as a smartphone or a book), the glasses will synchronise the brain's movements with those of the inner ear. You can then take the glasses off and enjoy your next journey. The fluid in the frame simulates the angle and level of motion of the eye, so that the perceived motion of the eye matches the motion perceived by the inner ear. If there are no conflicting signals, then naturally you won't get sick. Features. *No lenses designed to prevent motion sickness on both sides. *Eases vomiting, retching and dizziness in less than 10 minutes. *Foldable, portable, non-deformable and highly effective for motion sickness. *The fluid in the frame simulates the angle and movement of the eye level so that the movement perceived by the eye matches the movement perceived by the inner ear. *If you stare at a stationary object, such as a smartphone or a book, after 10 minutes of wear, the glasses will keep the brain in sync with the motion perceived by the inner ear. Of course there is no motion sickness. *Suitable for adults and children. Product includes. 1* Anti-sickness glasses Caution. 1. The monitors used are not the same, computers are not the same, the angle of photography is not the same, there may be angle colour problems. 2. Pure manual measurement, there may be 0-1cm error.