The nitehowl, led safety dog collar necklace, flexible polymer that's illuminated by bright led & can be recharged for hours of nighttime fun & safety, makes identifying multiple dogs easy with the ability to choose from 1 of 3 colors red, green, blue, polymer with multiple colors at the same time, disc-o mode creates a flowing color blending pattern, simply trim the flexible polymer to custom fit, durable, weather resistant housing & quick press, entire collar lights up a full 360 degree, making your dog clearly visible from all angles.