It's easy to put on this Yellow Light-Up Harness on 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 pet harness that will last. The straps are embedded with flourescent optical fiber that lights up for an awesome dog light show. Set to three different modes (slow/fast blinking and solid) for a bright flashy night walk with your pup.