"4-Level Fun Roller for cats who love to play with balls: Endless Chase and Play!" Does your cat always like to push ball toys under the couch or bed? Now you can stop worrying about the ball going missing, our 4-level roller cat toy keeps the cat ball well within the track, allowing the cat and the ball to engage in a happy game of cat and mouse! DIY EMOJI DIY emoji stickers are included, so let your imagination run wild! Create your cat's own unique toys! Green Blue Pink STEP 1 Nest the orbits of the balls in order from largest to smallest STEP 2 Installation of non-slip mats STEP 3 Put in colorful balls STEP 4 Choose emoji stickers and stick them according to your preference.