"Happy Purr-thday" 6pc cat toy set. These colorful & engaging toys are sure to be a favorite of your birthday kitty's. The plush & felt toys are made with North American grown catnip & crinkle paper ("cherry" bell on cupcake) ... our favorite is the Happy Birthday "balloon" with metallic bungees & pom poms! There is also a fun rattle ball with feather, rattan ball & crinkle ball. Not your average, boring mouse toy design, they are made with quality materials and generally measure 2.5" to 5".