My motion sickness started with I was about 7 years old and has continued to worsen as I got older. Now, at 58 years old, my refrain is "if it moves, I get sick on it." I even had to stop going to Halloween haunts because of the flashing lights. I bought this band because I'm going on a vacation to Hawaii and was hopeful it would work for the boating excursions. I tested it by being a passenger in a car on a two-hour trip (guaranteed to make me sick). It worked. Not sick. I next tested it by going through four Halloween haunts in a row. The lights did not bother me at all, and even walked through the vortex tunnel with my eyes open. Search YouTube if you don't know what that is. It was a guaranteed vomit-inducing moment for me before this band. I'm going on my boat excursions with confidence. My only wish is that the band was truly waterproof so I could wear it snorkeling and to scuba. It is advertised as allowing for being submerged up to 30 minutes. As soon as you make it 6 hours, I will buy more. Who would have thought light electrical stimulation on the inside of the wrist would be this effective? Not me! Thanks, ReliefBand.