8-1/2 x 11 in. Zwipes marker included. Permanent - 'til you take it off! 1. Write it! with permanent fine tip! 2. Undo it! with Zwipes ink unlocker! 3. Erase it! with cap erasers. The power to write. The power to unwrite. Zwipes Marker conforms to ASTM D 4236. Non-toxic. Made in China.