Using this dog t - shirt is easy. Just slip it over your dog's head and adjust it to fit comfortably. Make sure it's not too tight around the neck or body. When it comes to maintenance, you can machine - wash it in cold water on a gentle cycle. Use mild detergent and avoid bleach. After washing, tumble dry on low. Keep in mind that you should check the fit regularly as your dog grows. And always ensure that the t - shirt doesn't restrict your dog's movement during play or exercise.