It's a poster, it's a placemat, it's both. Smart Poly® material has been designed for the classroom and home. The material is strong, durable, water resistant, and does not need lamination. Heavy duty surface for fun and colorful learnings. Write-on/wipe-off surface for use with dry erase or water based markers and washable crayons. Measures 12" x 17.25" . Visualize three different objects of each color to help recognize that color. Practice tracing the name of the color. What other objects can you name that are that same color?