Using this safety vest for your dog is easy. First, open the touch - close fastenings at the chest. Then, place the vest over your dog's back and wrap it around the belly. Close the fastenings to secure it. Make sure the elastic leg straps fit well around your dog's legs but not too tight. When it comes to maintenance, you can hand - wash the vest in cold water with a mild detergent. Avoid using bleach or harsh chemicals as they may damage the reflective strips and the fabric. After washing, let it air dry. Also, regularly check the fastenings and straps for any signs of wear and tear. If you notice any issues, it might be time to replace the vest to keep your dog safe.