TopLought - LiveStreaming

Hey fellas,

Looking for ideas and tips to fix my chair. Any help is much appreciated.

I have a file back cheap office chair and the file on the back came off. I'm trying to make a new cover for it but without any tools (like staple guns) it's never tight enough to rest on it.

It is hard to visualize without images so here below how it was and how it is now.

https://imgur.com/a/uWXkrnY

Old file was stapled into plastic frame from inside of a cavity and there was a rubber strip to fill the cavity from outside.

I tried to just slip a tshirt on it but wasn't tight enough.

Thanks !