Smart Poly Chart 13″x19″, DonutFetti Classroom Rules. Write-on/ wipe-off heavy duty washable all poly chart, no lamination needed. Use with dry erase or water based markers and washable crayons. Use with Ashley Smart Tak, pins, tacks, staples, etc. to hang in the classroom. Great for reusable learning. Match with coordinating DonutFetti charts and decor. Glossy surface, .45mm.