From the Dr. Seuss Cat in the Hat Costume Collection. Dr. Seuss Thing 1 or Thing 2 Adult Wig. Complete your outfit with this blue wig. Made of 100% synthetic fiber. This synthetic fur wig features a stuffable inner lining to help give it it's perfect shape! Just open the slit in the lining of the wig, and stuff it with plastic bags or old newspapers for a full-bodied effect!