I love the simple stylish design with the sturdy lid. But the most thing I enjoy is that it is perfect to shake my supergreen food powder or pina colada collagen powder (with the f...view moreibre in it!) I throw an icecube or two in and shake, shake, shake (Tay Tay style!). I also love that I can easily track my hydration throughout the day - at least 3 bottles of liquid per day = approximately 2 litres a day.