These strap and buckle sets are the standard strap and buckles we use at Gem's Trading Co for all kinds of jobs including as a fastener for cloaks, armor and bags, they come pre made with buckle attached ready to fix to your chosen item.
 
Brown leather with antique brass buckle or black leather with nickle plated buckle.
Buckle - 2.5 cm wide.
Strap width - 2 cm.
Length of total set when put together - Approximately 10 cm - 16.5 cm.