A bobble hat is the distinctive item of clothing worn on the head of Waldo and many of his followers. Waldo, Wenda, Woof, Wilma and the Waldo Watchers all wear red and white bobble hats - a white cap with a red bobble on the top and a red turned-up cuff. Odlaw wheres a similar cap, but with a black and yellow color design. A trail of bobble hats can be seen throughout the pages of The Great Waldo Search. The hats, along with glasses and walking sticks, were left by others Waldos from The Land of Waldos; and as such, several of the Waldos in The Land of Waldos are missing their hats.