This just to alert people of the cheap plastic clips used in some sofas. Our sofa is about 5 years old and it was a fairly good make. But they used plastic clips to hold the zig zag clips and after a few years the plastic has deteriorated and the clips just snap off. I have ordered metal clips.
Picture shows the broken half of each clip, the other half is still in the sofa.

Picture shows the broken half of each clip, the other half is still in the sofa.

