Right now on Amazon you can get a set of five Knobby (sensory) Balls for just $3.90! Please note, these balls will arrive uninflated, so you will need a pump. These balls have good reviews (4 out of 5 stars) and will ship FREE with Amazon Prime, or get FREE Super Saver shipping when you spend $25 or more on qualifying items. This is a great “add-on” item if you are trying to bump up your total and get free shipping.
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