The lights are quite small with virtually no weight as you can see compared to the size of a penny:
|Nice and small. Magnet on the left, light on the right|
|Left side near the pocket|
A simple twist of the product and it pushes the batteries together inside to turn it on. You can just untwist to turn them off after your run. The batteries provide up to 40 hours of life. They are quite bright especially since they change colors which I have always found is better for cars to see you coming. I took a quick video so you can see how it changes:
While they are bright, in my opinion, they are also too small. You do get two that come in a package but really, you would need more if you want to be seen by cars. I didn't feel it was safe to just run with these but if you coupled it with some reflective gear or headlamp would help it.
Personally I think they are better suited for walking where there is less chance of the item falling off your clothing.
If you are interested in learning more or purchasing them($9.99 retail), you can visit AthLights website directly.
Have a great day and....Keep Running!!!!
Disclosure: I received the AthLights in exchange for this review. All opinions are my own and I was not required to give a particular opinion other than an honest one.