This cordless portable blender is fun to use. The manufacturer has designed this unit with some thought. Its feels sturdy, very solid, substantial quality but yet sleek feeling as well in your hands. 
Cleaning is quick and easy. Simply add dish soap and water and blend for one cycle.
The nutribullet Flip is a unique combination of a portable blender and an insulated travel tumbler. 
It is not complex at all to use. It blends stuff within 2 mins which is great and the quality comes out super smooth and delicious. 
This is perfect for taking on vacation or to the workplace or I take it with me for a walk with my baby. The insulated cup stays pretty cold for a few hours (depending on temperature of water you put in & how much ice you used).