I have been a whitewater kayaker for the past 10 years and keep at least 3 Smileys Nose Plugs with my kayak gear at all times. They help me be able to hold my breath longer giving me time roll myself back up after being flipped. The rubberized tips hold well and dont slip off, and the core is quite strong. If you need something to help keep the water out of your nose I highly recommend Smileys. They will wear out over time, most last me about a year with heavy use.
Columbia, Missouri
This may not be their intended purpose, but these worked great for my wife when she was pregnant and could smell EVERYTHING! My only struggle was getting her to use them in the first place because they don,t exactly look super cool. All in all these were extremely effective at blocking unpleasant smells for my wife.
Columbia, MO