We bought one 3 months before our last trip, and it was so great for just the day to day that we bought 2 more before we left. 3 of the 5 of us suffer from migraines, and my migraines cause vertigo and panic attacks. I can’t say specifically for nausea related to motion sickness but they were fabulous for our migraines. My family was able to ride Guardians without any motion sickness or nausea. I'm glad it worked for you and your family. I will be packing one for sure after reading your post