It''s very frustrating, It''s very bulky for me since I have a small ears and its always coming off even with a cap on. I am still trying to find a way to make if comfortable and so far no luck. Even when I try using the other buds it''s not helpful and it''s kinda hurting me since I''m trying to push it in my ear :(

Sound is good but if you wear a cap when you swim, the buds hurt your ears.

Works fine.  Comes with different sized buds.  Super long cord, sometimes gets in the way, but I used a hair clip to keep it up so they didn''t pull out of my ears from the weight of the cord.

I use the earphones to listen to my I-pod while I swim laps.  The sound quality is very good, the ear plugs stay in and fit very well.  There is a big selection of various sized ear plugs that come with the earphones, so anyone should be able to find a size that fit well.
This is my 3rd pair of waterproof earphones (different brand) and so far I like these the best.  Like the others though, as you swim and water gets in yor ears, the sound does get muted.  The wire cover is fun and wires are plenty long.  I tuck it in the front of my suit to have it stay in place.
Overall I think it is a good product.

I use the headphones for exercising in the pool.  I have tried all the included ear pieces and the headphones will not stay in my ears.  My previous pair (a different brand) worked fine.  I may have to return these.  On the plus side, the sound quality is good.

I bought the head phones to use with my IPOD for swimming. The ear buds do not stay put and the flat line pulls as you swim.

It would be great for water sports but not swimming laps.