The 2L bottle gives you plenty of water, allows you not to refill it frequently. Integrated With Capacity Scale with which you can measure your daily water intake and can remind you to stay hydrated and drink the amount your body needs. It's good for fitness,gym,weight loss and maintaining a good habit. 900ML+330ML small water cup is suitable for small children, no matter the activity, school, parks, country days. It is very practical to carry.