I love this product.  I've used it in the pool probably 5 times now, for at least an hour each time with no leaking or any other issues.  It's greatly improved my swims.  

My only issue was that the first band I received was OBVIOUSLY used.  There were no instructions in the box, no inner packaging, and the band looked like it'd been left in a pool for days and then dried in the sun.  I was sent a new band which was brand new and that I now thoroughly enjoy.

The only reason I didn't give this product 5 stars is because when you open the casing it's almost impossible to keep some water drops from falling onto the iPod, even if you've dried off the outside. And the casing is difficult to open, I'm always afraid I'll snap the latch with how much pressure it takes to open.

The armband did not work with the suggested ear phones.  My ears continued to be plugged by water no matter what size headphone I used.  I would not recommend this product for anyone who is serious about lap swimming.  I swim 100 laps 3 times a week.  I think that the armband works great but they need to come up with a better headphone system.

Great service however as I received my money back within a short time after I returned this product.

Use this with my IPOD shuffle and it works well.  Could be a little smaller and it feels a little bulky.  But it doesn't leak and I can still use the controls on the shuffle easy enough.  wish it came with earphones.  Overall a good product and easy to use.

it revolutionizes swimming laps for exercise.  I swim an hour a day 4-5 times a week and this just makes the time fly.

Only drawback is that when strapped around arm, limits movement.  Fixed it by putting it around a suitstrap...not ideal, but better.  Would be great if it clipped to my suit.