These pages are sturdy and slide easily in and out of the plastic without making me think they might slide out when I don't want them to.  Generously proportioned and perfectly sized to fit into the scrapbook - they also had extended holes so if you're not using the Pioneer brand scrapbook, these refills will probably still fit.  They come with expansion screws, which is awesome, and they're of good quality.  Happy with this product and have already re-ordered.