So my 1 year old loves markers, and coloring. My friend bought him a huge box of the washable crayola markers for his birthday, but he discovered the markers will color other things than paper. When he reached the walls, I almost died until it washed off haha. Well I discovered the color magic markers by crayola that will only color their paper....phewww... he tried to color the walls, and it was a no go. My son is back to coloring on his magic paper. THANK YOU CRAYOLA!!