What is the shank of a boot?

In boot anatomy, the shank is a long, thin strip of stiff material between the midsole and insole that provides support and stability. If you're wondering

There are a few cracks in leather on tongue and a few stains on the leather sides but no tears. They have toe protections, a steel shank to protect

Carolina women's Shoes 4x4 Steel Toe/Shank Work Boot Hiking US 6M Brown leather

14: Putting in the steel shank

What is the steel shank boots, and its purpose?

What is the steel shank boots, and its purpose?

THE THUNDERBOX

What is a Steel Shank in a Work Boot? Are There Better

THE THUNDERBOX

Steel shank? : r/NicksHandmadeBoots

Vintage Men's Shank Rubber Boots

What is a steel shank and do you need one?