This holder is made of heavy-duty corrugated board in a woodgrain pattern, and folds flat for easy storage or transportation. Each holder contains 25 sheets of Manila tag with 1-1/2" ruling, 3/4" dotted midline and 1/2" skip space. The chart is spiral bound and 2-hole punched. A 12" picture story space on the front of each sheet makes it great for classroom anchor charts. Recyclable.