Living hinge

Okay kiddo, a living hinge is a thing that helps a door or a box or something bend over and over again without breaking. It's like a magic line that helps it move back and forth without snapping like a stick.

You know how you can bend a piece of paper back and forth until it gets weak and rips? Well, a living hinge is a special kind of hinge that can bend and flex OVER and OVER again without breaking.

It's called a "living" hinge because it's made of the same kind of material as the thing it's holding and it can actually move and flex like a living thing.

So if you have a little box that you want to be able to open and close without a regular hinge that might wear out or break, you can use a living hinge instead! It's like a little, flexible spine for your box! Cool, huh?