Rigid MDF construction Double-sided whiteboard | 100 square grid on front,Reverse is plain For use with drywipe pens (pens not included) A4 size | Size: 226 x 305 x 2.7mm | Board thickness: 2.7mm each | Pack of 5 Ideal for mobile teaching and allows children to work on the move Strong & durable whiteboard with easy to clean surface Ideal for everyday use in the classroom Allows more children to be actively engaged in the classroom Helps with Interaction between children & the teacher