I’ve been using this exclusively for the past couple of weeks, as I had grown fed up with the discomfort of traditional head lamps. I’m blown away with how much more convenient and comfortable this product is. Apart from the convenience of having a traditional belt to carry keys etc, the light unit sitting around your waste has zero bounce whilst running. It fits comfortably around the waist and I would go so far as to say I barely notice it whilst running. 600 lumens is also plenty of light, and it’s easily adjustable should you wish to adjust the angle of the light.