This collar is designed for puppies and is a basic collar made of plastic. It is not customized and does not contain any high-concerned chemicals. The LED light feature uses high-quality modern lamp beads, providing effective visibility for your dog. The collar can be charged using Micro USB or a USB power adapter. It is also weatherproof and can be cut to fit your pet's size. Safety is a top priority with this collar as it increases visibility in low light conditions. Made of silicone, the collar comes in various colors and includes 1 x Pet Dog Collar and 1 x USB Charging cable.