I purchased this for use in my office. Its concept is great because it’s a small footprint and doubles as your cup. With that said, I would not use this to blend at home and take on the go. It way too heavy and clunky for that. There’s no doubt that it’s pretty air tight and there should be little to no concern for spilling. The blades and speed are decent. I will put in some water, scoop of protein powder and a few ice cubes. It will generally take about two rotations to get the ice to fully blend. I would not use this as my primary because I add banana, frozen berries, etc and I just don’t have confidence this blender would get through it all.

I can see the use case for mixing alcoholic drinks, but I expected the ability to actually blend soft fruit without stopping. Power is INADEQUATE for blending smoothies. Liquid + powder is all it has the power to blend. That liquid ought to be cold because ice will make it stop. I've tried softer nugget ice to no avail.

Perfect timing for the recipient. Easy to use and lightweight.

Spin to your heart's content. great design powerful little blender!

Poor design, cleaning it sucks and don't bother trying to make a smoothie. If it's not the consistency of milk, it keeps stopping. Throwing it away and buying something else.