The liquid in the frame simulates the angle and motion of the eye level, so that the motion perceived by the eye will be consistent with the motion perceived by the inner ear. Without conflict, there will naturally be no motion sickness..After 10 to 12 minutes of wearing, when you stare at a stationary object such as a phone or book, the glasses will re-synchronize the brain with the motion felt by the inner ear. You can then remove your glasses and enjoy the next journey..Foldable, detachable and easy to carry. Small size, ultra-lightweight, travel can be carried around..Made of high-quality PP material, it has super arbitrariness and antioxidant capacity..Effectively prevent motion sickness, prevent dizziness, nausea, vomiting.