Does your cat have the naughty habit to run after the fringe of your curtains, If so Knotty Habit is for her/him. Made with Yarn material that is known to be loved by most fo the cat (ok, all of them). They love the texture and how they can grab it with their claws. Knotty Habit always comes in a myriad of color, and with bonuses like catnip and jingle bell and even feather for some.