I have a full size blender that comes with travel cups, but I’m not always happy with how the travel cups blend and I don’t want to use the full size for one serving. This Ninja portable blender is great for that. It is easy to use and assemble. I use a lot of frozen fruits/veggies and make really thick smoothies, so sometimes I have to run the blender multiple times to get everything smooth. The good part is that I can easily shake it in case it starts slowing due to thick textures. I can always leave some of the smoothie for later and if it starts separating, it’s easy to blend it again. This Ninja is easy to assemble and clean. It is not heavy and fits good amount of smoothie.