Campus 彈蓋水瓶 600 毫升 - 清涼粉

The flip lid stays open without holding it, which is perfect when I'm typing at my desk. The 600 ml size fits nicely in my backpack too.

The one-hand button mechanism is so smooth I find myself clicking it shut just for fun, and it’s held up fine with sparkling water in my backpack all week. No leaks at all, which is the real win.

The pink is even prettier in person, and the push-button lid stays open while I sip, which is perfect for quick water breaks between classes. I've dropped it twice already and it hasn't leaked a single drop.