We was expecting a good product based on the reviews we read about it, but it is much better.
First thing you noticed is the size, a bit bigger than original, what is good for my hands (also perfect for my wife’s hands too). I think is an improve cause not only kids play with consoles.
Second, the grip. The back part have a rubber feeling, making it more convenient and comfortable. It is also safer when you leave it on the table, it doesn’t slide if you move the table without removing the controller.
The way the joy cons fits in the controller is basically perfect, as the producer is supported by Nintendo.
My conclusion, if you are looking for a spare controller (I’m honestly considering the one that came with the console as the spare one) for your Nintendo Switch, look no further, this is THE ONE!