A magnetic closure is one of the most widely used bag closures. Do you want a closure that is completely hidden? Then this is the one you're looking for.

The thin magnets come in pairs and are packaged in a plastic shell. This also makes them machine washable. You can also use this casing to stitch through and hold the magnet in place.

When sewing always make sure that the poles are placed so that both magnets attract each other!

The magnets are strong, but with too many or thick layers of fabric, the magnetic force is greatly reduced. They are therefore best used with cotton or canvas, less so with thick (synthetic or cork) leather.