This nose clip definitely keeps the water out. My only complain about is that it does tend to hurt my nose a bit. I'm a female with an average size nose but if you are hypo-concerned about water entering your nose, get this clip because it honestly does keep out the water. I have no problem swimming and can do flip turns without any water getting up my nose. Honestly keeps 100% of the water out and it did not fall off for me. Works perfectly, is inconspicuous but my only complain is that it isn't the most comfortable so try the silicone Speedo Nose Clip if you have the same problem too. But overall, great clip.

The speedo is diffanantly a great fit and holds pretty well. Only thing they could improve on is making the wire portion coated with silicone or something soft.

I use this when I use my Finis snorkel.  I was having trouble doing flip turns with the snorkel, but with the nose clip flip turns are a piece of cake.

The nose clip is great. At first it was a bit tight on the nose but now it fits perfectly. I love having a case to put it in, it's a lot easier to keep track of.

The best I've found so far. Use it for lap swimming and various swim drills. Keeps out 98% of water, is reasonably comfortable and stays in place with minimum of fuss (without the need for a neck strap). It has a more logical design than most others. A good product.

Could not keep these on my nose. Other nose clips work much better. Do not waste your money on these clips