Hop over to Amazon and get a deal on Chuckit! Medium Air Fetch Ball Dog Toy, 2-Pack. Compatible with Chuckit! Dog Ball Launchers,  these high-performance balls for dogs have a hollow, mesh-like design that helps facilitate breathing and airflow into your dog’s lungs while running and fetching – a breathable alternative to standard tennis balls. … Continue reading Chuckit! Air Fetch 2-Pack Medium Balls as low as $6.29 Shipped Free (Reg. $15) – $3.15 each