Review on USB Rechargeable LED Dog Collar - Illuminated Silicone Pet Safety Collar with 3 Glow Modes, Adjustable Fit - Suitable for Small, Medium & Large Dogs - Ideal for Nighttime Visibility by Tamara Ellis

We need that! We've only ever used a small light that we just clipped to our dogs' collars, but that would make them a little hard to see if they were at an angle away from you. Our new puppy is a Chocolate Labrador and he disappears in the dark very easily! These LED collars are perfect. The glow is bright and you can use fast blinking, slow blinking or steady light. (I only use a solid body because it's too much flicker for me.) I've also started carrying my saddlebag on my horse, as sometimes my trail rides last until dark and other times we're riding through town. Great for night time outings with your pups and you can dress each up in different colors so you can see who's who. Remember they do not replace your dog's regular collar and do not hold if you need to grab/hold them. behind the collar for some reason. (Just remember to put on their regular collar as well and you're all set!) They do, however, serve the purpose of ensuring your puppies are visible in the dark.