A mouthpiece that can be stepped up as you grow.

Since only the mug parts can be replaced with the same bottle, the step-up from spout to drinking straws and drinking cups is smooth.

try series that draws out the next "I want to try!" While snuggling up to the baby's "I'm done!" And "I'm happy!" That grows little by little every day .
It is a mug that can be stepped up with a lot of plus α functions that can be freely combined according to growth and scenes.