In their little heads they're leaping around like a superhero. In reality they've sent a bottle flying & there's milk all over the carpet. You need the Bat Sippy Cup! This fun-loving leak-proof beaker is made from BPA-free, phthalate-free plastic with a removable spill-proof lid, silicone stopper & big bat wings to grasp onto. No leaks! No spills! No problem.