Cool Pencil Case - Wonder Ears Animal Pencil Case (White Critter) Maximum capacity is approximately 35 pens. Unit is sold as single Pencil Case. Pens and pencils (pictured) are not included. The gem of the Wonder Ears Animal Pencil Case is the adorable set of ears and fins that stick out from the cover. On the cover, each pencil case features an extra dose of fun with the face of your favorite animal pal. The exterior of this pencil case is made of a vinyl material, perfect for the usual wear and tear of school life.