These page protectors do not hold 12x12 scrapbook pages, especially if you put any dimensional embellishments on your pages. I had to cut 1/4 inch off each of my pages just to get them to slip in the protectors and my pages still curled and buckled.
Love to take photos & create scrapbooks. None are real fancy but do use special papers, cardstock & stickers. All pictures since the 1960's are is scrapbooks & some of these books are a few inches thick so need extra pages all the times. Use to find these loading refills at local stores & love them as quality is good, not too thin & paper insert is included. My last sources have discontinued carrying this Pioneer product & other brands don't match the quality.
These are very sturdy stock paper. They went into my album and fit very well. I don't have any of my papers or stuff sticking out like other reviewers said, everything fit wonderfully. I absolutely love my album, it's going to be a memory book for my Daddy. It holds all of the pictures and a LOT of his newspaper articles. My sister loved it so much she had me order one for her as well. I needed 3 extra packs of these refill pages to complete it.
I started out with a Pioneer memory book years ago as my very first scrapbook. These refill pages are so easy to use and they fit perfectly. I have never had a problem with them. I would definately recommend them to others.