I love this product. I do agree that the volume is a bit low but if your looking for loudness and sound quality I would go for the sound sport. (Which I could totally use a pair of). But I'm a tool maker and I love to listen to music at work. The only problem is its incredibly dangerous to not hear the machine. So these frames would be perfect for machinists and construction workers if they were clear safety glasses. It might be worth the while to market to them. Thanks for listening!!!