Pocket Chart Inserts feature a heavy-duty, write on/wipe-off surface. No lamination needed. Use with dry erase or water based markers and washable crayons. Cards are double-sided, scheduling on one side and sentence strip on reverse for 24 total surfaces to use per pack. Mix and match with Smart Poly™ Pocket Charts. Cards measure 2" x 12" and includes 12 cards per pack. Sold as 6 packs for a total of 72 cards.