D-shaped buckle is a very common plastic buckle. It is often used in backpacks. It is an indispensable detail accessory on backpacks. It functions like a small screw, which seems inconspicuous but has great use.
The D-shaped buckle is named because it looks like the letter "D". Its arc is very smooth, and it is suitable for picking up with your index finger or thumb. Therefore, some bags will design the D-shaped buckle in the place where the force is assisted. Larger travel backpacks will have a D-shaped buckle in the front of the strap. This design is to help you increase the force when the bag is too heavy. Used alone as a D-shaped buckle for hanging glasses and keys.
