The sleeve, yes. Sorry my english isn't up to snuff yet. Working on it.

Didn't realise it was vinyl, that's odd. Will check again tomorrow.

I don't plan on ditching it. Just wanted to put the computer back together while I figure out what it's problem is. Or find a way to put the sleeve back and remove again easily. (I cutted the 3 foam pads in half with a blade to remove it.)

Thanks.