Easy to use if you read the instructions.  To blend correctly you must cut the fruits in very small pieces and blend it for one minute to make it puree. Don't blend it over a minute, if so, it will go overheated.  Need to improve the blades to be shaper. I would not recommend in the dishwasher,  it might melt the rubber pieces. These little cute faces jars  allows you to  put dates on the lids. Also, they are stackable.