The 3 pair pack of Mack's AquaBlock Swimming earplugs are a good value given how effective they are keeping your ears dry while swimming. I swim twice a week and up to an hour each time, and these earplugs ensure water stays out of my ears. This is important given that using such ear plugs helps avoid ear infections or swimmer's ear. The earplugs themselves are very durable and long lasting, a must in chlorine treated pools, and their color makes it easy to identify in a bag as opposed to clearer ear plugs.