Well when I ordered my notebooks for my child it said dude ruled 1 subject non perforated notebooks. When they came in they were perforated. I think the description needs to be changed.
Who ever heard of using wire to hold pieces of paper together. Brilliant I say. And on top of that encasing the paper in rectangles of cardboard is both thrifty and attractive. I love the addition of three handy holes in case I purchase a ring binder. Plus each page comes with ethereal blue lines and a zippy red stripe down the side. I bought an even dozen and recommend you do too!