Please refer to our size chart to select the right size based on your height and weight. The costumes have a loose design, so you can choose to go one size up. They are suitable for various occasions such as birthday parties, family gatherings, conventions, Halloween, and Christmas. You can even use them as pajamas or casual wear. The costumes have two pockets that can carry small belongings like remote controls, keys, and phones. They are eye-catching and perfect for standing out wherever you wear them. Please note that we are only recommending products and do not provide any warranty or return services.