Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Performance 1 Drawback

The in-ear design is great and with different ear plugins to choose from it has many options. The lightweight feel is a good, sometimes you'll even forget that you have it on. Its styling is very sleek, I actually like it better than other ones that look too bulky and flashy. This one is subtle, no flashy colors, or extreme blinking lights. The buttons are placed well, and you can easily raise or lower the volume on the call.Things that I would like to see different is the locking mechanism for the in ear plugs. The tube that's supposed to lock the plug into place is made of plastic that wears down very easily with normal wear and tear. I've had to replace 3 plugs already because of this. It should've been designed with a button type hook or maybe even just a permanent lock. That would be my only complaint on this product.