Incidentally, the cores of the 'Wicked Rugby' (ASIN: B0FFFZ2JZ9) and 'Wicked Ball Air' are compatible. Simply wipe off any dirt and rinse the outer shell after making sure it's screwed on tightly. Simply rinse the mud off or snap on a fresh shell your dog's boredom buster that's built to stay fun for years, not weeks!
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