The UniKeep Stamp Collection Kit is the best way to begin your stamp collection or add on to a growing collection. Our crystal clear, archival safe pages will keep your stamps in mint condition. With the ability to hold up to 150 or 300 back to back. The unique snap locking and fully enclosed case prevents anything from falling out, allowing you to also store loose items. 3 locking rings open to remove or rearrange pages. 150 mounting squares included to give your stamps a professional display appeal. Small enough to carry in a purse or bag and easily fits in a tight spot on a shelf.