彈出式飲水瓶校園400毫升 - 野馬

My son can open and close the pop-up spout by himself now, which is a huge win for school mornings. The leakproof design has survived a few tumbles in his backpack already.

It fits perfectly into the side pocket of their backpack, and the pop-up mechanism is smooth enough for small fingers to work. No leaks so far, even after being tossed around all day.

My kid can actually open and close this thing by herself, which is huge for us. The 400 ml size fits perfectly in her backpack side pocket, and after a month of daily use, not a single leak in her lunchbox.