2. But the 750ml water cup is not convenient to carry. The water cup with a capacity of 750ml is relatively large, which makes it inconvenient to carry a schoolbag or schoolbag.
If you want to carry it conveniently, you can buy a small ml water cup. In fact, it is enough for everyone to drink 500ml of water in the morning. You can continue after drinking. The 750ml water cup is quite large and inconvenient to carry.