midsole
/ˈmɪdˌsoʊl/
noun
- The layer of material in a shoe between the outer sole and the inner sole, often providing cushioning and support.
- He replaced the worn-out midsole to make his hiking boots comfortable again.
- The midsole of these running shoes is made of a special foam that absorbs shock.
- The shoe's midsole provides extra arch support for long walks.