This post bound leatherette cover memory book is refillable and features an expandable covered spine. The book contains 10 top-loading, 12-Inch by 12-Inch crystal clear seamless polypropylene page protectors with heavy white paper inserts. The actual book measures approximately 12.5-Inch by 13.25-Inch and comes with a clear protective jacket. All materials are archival, photo safe, acid and lignin and PVC free. Uses refill RMW-5.