Cub Scouts wear a blue polo shirt with yellow sleeves. They will also be given a scarf and badges to sew on their uniform. One of the best things about Cub Scouts are the number of badges you can earn to sew on your uniform.
When you first talk with the Cub Scout Leader about joining, they will give you information about what to wear and bring to the first meeting. You can buy your Cub Scout uniform from the Scout Shop.