Laminated Erasable Writable Index Dividers offer you a fast, simple way of making your own tab titles, with the convenience and cost savings of being easily reusable. Just erase unwanted or outdated titles and reuse. Letter size five divider set made of heavy white stock offers 50 percent larger mylar-reinforced tabs and mylar-reinforced binding edges. Three-hole punched to fit in standard three-ring binders. Dividers contain 50 percent recycled material with 30 percent post-consumer material.