Iwako Japanese Eraser Set Marine Animals (Colors May Vary) 10 Piece Sea Mate Ocean Life Eraser Set in Case by Iwako Japan. Largest eraser (Penguin) measures about 1.1 inch tall. Ships in assorted colors = customer must be willing to accept any color received. These miniature erasers by Iwako are all the rage and kids absolutely love them; collect them all! Ages 8 years and up.