This sturdy binder is perfect for my needs. I have placed each loose knitting pattern (such as those copied from friends as well as individual patterns purchased from such places as Ravelry and Patternfish) in plastic protective pages. The D-shaped metal rings are so much better than the old circular ones I had been using; wish I'd switched over long ago!
I purchased this binder for me middle schooler. The ring was broken in the first week and the cover split in the first 3 weeks of use. I purchased a staples pencil case as well and the zipper broke as I was closing it on the first use!
I bought this binder to replace the miserable binder my work place provided (I guess I shouldn't complain about free). The Staples binder has a great black tab for easy opening. I fact I liked the colors and the performance so much I bought another five.