* Leak Proof * Dishwasher Safe * Converts Baby Bottle to Sippy Cup The natural way for your baby to transition from baby bottle to sippy cup The familiarity of clear, soft and durable silicone promotes a comfortable adjustment for baby Spill and leak-proof spout featuring an integrated valve that prevents messy drips "Life Bottle" for the next stage in a sustainable drinking solution convert your bottle to a water bottle with organicKidz bottle caps taking you from newborn beyond preschool.