Every year, hundreds of thousands of championship tennis balls are retired. The team at hearO set out to reimagine these leftover tennis balls and unlock their potential. The tennis ball’s toughness and hollow interior made it a ready-made protective case. The size and construction make it an ideal skin for personal electronics. Developed in partnership with expert manufacturers and engineers, the final result is powerful, portable wireless speaker that elegantly blends tennis, upcycling, and product design for a unique look, sound, and feel.