When adjusting your insole size, cut off the periphery of the insole along the outline so that it becomes a little larger than your own foot size and fits your shoes.
Dry it well enough before use. (You are recommended to use two pairs of insoles alternately.)
Please note that insoles may be partially stained with ink depending on the frequency of their use and/or type of material used for your shoes.
Since the insoles have some thickness, you are recommended to wear shoes which have enough room for them.
The effect may vary from individual to individual.