To use these boots, simply put them on like you would with any regular boots. They are designed for Kamen Rider Black Sun fans who want to feel the transformation. When it comes to sizing, make sure to use the provided converter as the sizes are in Japanese measurements. Note that the price you see includes import duties if you're in the USA, so there won't be any surprise fees. And you get free shipping within the USA. To maintain these boots, keep them clean by wiping them with a soft cloth regularly. Avoid getting them wet for long periods as it might damage the material. Store them in a dry and cool place when not in use.