Trixie Flash Light Ring USB Silicone

Basically a good product: easy to cut to size, rechargeable (so no batteries needed), different colours and modes to set, easy to attach around the dog's neck. But two (quite big) drawbacks: now and then the collar came loose and fell off our dog's neck (luckily it lights up, so you can find it quickly), and the biggest disappointment, after a few weeks the light already stopped working... So unfortunately, not worth the money.