Djubi Slingball Medium Ball Refills are perfect for keeping the excitement alive in your backyard or living room! These refills not only ensure that the fun doesn’t have to stop but also provide fantastic opportunities for kids and adults to enhance their hand-eye coordination, reflexes, and reaction times. As parents and educators, we know that play is a vital part of learning, and with these extra balls, everyone can join in on the action, fostering teamwork and social skills along the way. 5+ years