This Magikarp hat is super fun for Pokemon fans of all ages. There is now a knitted version available. The main difference is the knitted hat is stretchier and lighter weight. In the picture of the two hats together the one on the right is knitted. 20 inch circumference with room to stretch. Its made extra long so you can wear it with the tail flopped over or stretch it over the face to look like youre being eaten.