This Blue Light-Up Harness is quick and easy to put on to your dog for daily walks. Simply have your dog "step in" to the left and right opening with its front paw and snap the harness shut around the back. Sturdy nylon construction and robust D-rings makes this one durable pet harness. The straps are embedded with fluorescent optical fiber that lights up for a light show. Set to three different modes (slow/fast blinking and solid) for a luminescent walk in the night with your pup.