Insole (noun)

1. A removable insert placed inside the shoe for cushioning or support.
2. A pad or cushioning inside a shoe that provides comfort.

Origin:

This word comes from the middle english word insole meaning "inside sole of a shoe", formed by the prefix in- meaning "inside" and sole meaning "sole of a shoe".

Examples:

1. The insole of the shoe was made of memory foam for added comfort.
2. The insole was removable for easy cleaning.
3. He replaced the insoles of his shoes to help with his foot pain.
4. The insoles were designed to provide arch support.
5. The insoles were made of breathable material to keep the feet dry.