This is a really excellent #rearbikelight product. Well thought out and well designed. It's sleek, but not tiny. It's solid but bulky. I really like the narrow idea as it doesn't interfer with anything else on the bike. It is no thicker than any bike frame I have ever seen, certainly not thicker than mine. It is ultra bright and the charging port is located on the back of the device (the side attached to the frame) which would help prevent any water from leaking into it with the included rubber dust cover that is attached to the port. It charges quickly and comes pre-charged in the box so as soon as you open it up you are good to go. The rubber strip to attach it to the frame is very sturdy yet flexible and easily snaps into place. It is also able to attach to a helmet that has vents on it. I have heard some people attached them to pet collars. I only have cats and I would not like to imagine what would happen when I tried to attach it. Best use it for it's intended purpose, which it excels at doing very well.

I would highly recommend this product for any consistent outdoorsy types that need to be seen in low light situations.

*I received this product free in exchange for my honest opinion. I only rate based on my experience with similar products. I try to stay as objective as possible* check it out at http://www.nightprovision.com/products/night-provision-trade-line-120f-front-bicycle-headlight-usb-rechargeable-led-120-lumenshttp://www.nightprovision.com/products/night-provision-trade-line-120f-front-bicycle-headlight-usb-rechargeable-led-120-lumens