Tupperware quick shake gen 2 has an ultra-tight screw-on lid that is 100% leakage proof & has a lockable flip top that ensures no drips. It has a unique plastic blender that efficiently blends the constituents to achieve more consistent smoothies, juices or protein shakes. Just shake with it and your cold coffee, protein shake, fruit shake, lassi etc are ready within minutes. Capacity is 680 ml. It also has capacity marking on it. Very useful product for carrying in gym and ground. It is a BPA free product that is easy to clean & is freezer safe. Do you need more reason to buy it?