The term "footbed" refers to the part of a shoe or sandal that comes into contact with your foot. It is usually made from cushioning materials such as foam, latex, or memory foam and provides support, comfort, and shock absorption while walking or standing. The design and material of the footbed can vary depending on the type of shoe or sandal it is used in, but its primary function remains the same - to provide a comfortable surface for your feet to rest upon.