SUPERIOR PROTECTION - Crafted from 10 point cardstock, these archival mounting pages ensure your valuable photos and documents remain safe from damage and deterioration. ARCHIVAL SAFE - Acid-free construction guarantees long-term preservation, preventing yellowing and embrittlement of your cherished memories and important documents. OPTIMIZED CAPACITY - Each pack contains 25 sheets, providing ample space for organizing and displaying your 9 x 11' images within standard 3-ring binders and albums. REFILLABLE DESIGN - The 3-hole punch allows for easy insertion and rearrangement within any compatible 3-ring binder, offering flexibility in organizing your collection.