This material from Ashley is called SMART POLY. The material has been designed for charts in the classroom and home. These charts are strong, durable, water proof, and do not need lamination. They can be displayed like any chart with staples, pins, and more. The surface is designed for dry erase and water based markers. Tablet Lined 3/4" Smart Poly Chart measures 17" x 22" with a dry-erase, glossy surface, .45mm.

Key Features :

i : Charts are strong, durable, water proof, and don not need lamination
ii : Made from a material called SMART POLY
iii : Use with dry-erase or water-based markers
iv : Water Resistant