Smart Poly™ material has been designed for charts in the classroom and home. These charts are strong, durable, water resistant, and do not need lamination. Display with Ashley Smart Tak™, pins, tacks, staples, etc. The surface is designed for dry erase and water based markers and washable crayons. Great for reusable learning. Banner measures 9" x 24" with a dry-erase, glossy surface, .45mm.