"I get motion sick so ridiculously easy! I went on a cruise with my family and I was so nervous about getting seasick. I put these on from the time the cruise started until it ended, and I did not get sick at all. Not even for one second. We hit some rough seas, and the ship was pretty rocky and I was nervous as other people in my party were starting to feel the effects of the motion. I didn't get sick at all. I absolutely recommend these. I also took them on a snorkeling tour in Hawaii and did not get sick at all. Absolutely a must for those who get motion sick. I don't know how they work but all I can say is amazing." - Francisco