Using this dog harness is a breeze. First, adjust the straps to fit your dog's neck and shoulders snugly but not too tight. Then, put the harness over your dog's head and fasten the buckles. When walking, attach the leash to the D - ring on the back of the harness. Make sure to check the fit regularly, especially if your dog is still growing. For maintenance, you can hand - wash the harness in mild soapy water and let it air dry. Avoid using harsh chemicals as they may damage the mesh material. Keep it away from sharp objects to prevent tearing.