This archival safe negative pages album is made of PP plastic material, acid-free, and pvc free to keep your negatives safe. The binder is made of sturdy plastic, and the rings open smoothly with a strong handle for easy page turning. The binder is designed to hold 35mm negatives in place with two posts per pocket and fits both 35mm and 120 film strips. The binder has a secure locking system and comes with a durable handle for easy transport. This album is perfect for archiving and preserving your precious negatives.