Cool bright thing, packed very reliably! You can adjust the width of the band. Velcro is good-holds firmly and leaves no leads on other clothes. It came with batteries (2 PCs tablets are large), has two modes: flashing and constant glow.

Just like the picture. They light quite a lot and have two modes, fixed or intermittent lights.

I recommend it! Great for running or walking

My husband uses these every night for runs. He has not had any problem with them staying in place, and being visible enough.

I love that I had enough to share with workout partners as well. We are a bit safer when taking our evening walks.