Not a single detail was overlooked in the quest to design the ultimate 12" x 12" top-load post-bound album. The pages are constructed of archival, ultra-clear polypropylene with beautiful welded seams. Simply slide in your photos, special papers, or layouts. The covers are constructed with double-weight warp-resistant boards wrapped in water and soil-repellant book cloth specially milled in Italy to Kolo's exclusive color pallette. The Kaji comes with 10 top-loading pocket sheets (20 pages); expands to 50 sheets (100 pages). Refillable. Use Series K or H Refills.