noun / adjective
leather
LETH-er/ˈleðər/
Material made from tanned animal hide.
The folded corner reveals the suede underside of the brown leather.

Etymology
Old English leðer already meant hide treated by tanning or other dressing. The modern material sense preserves that focus on prepared animal skin.
In context
of your boot is formed but sometimes they pull the leather back and what you see is the liner
More examples
- She wears leather boots when she rides.
- This wallet is made of thick brown leather.
- Keep leather away from direct heat to prevent cracking.
Forms
leather
leathery adjective — Resembling leather in texture or toughness.