For the price, works great. Speaker quality actually pretty good and the mask in general is comfortable to sleep on. The built in cord that connects to the speakers (and then to your ipod) is on the side, so if you sleep on your left, it may or may not be an issue of comfort. Also good for traveling because the foam on the sides allows you to rest like a minature pillow, without having to carry one.

This is an awesome product!!..I can't sleep without it now!! It's highly addictive and works like a charm...My only complaint is that I have a rather small nose so it's a little overwhelming sometimes for it, but all you have to do is rearrange it and it's fine :-). It would be really cool if it had aromatherapy too...oh well...Highly recommended!