The cube is very well made. The function is absolutely flawless so it meets the requirement in spades.

I love it, the material is a good quality, I actually bought for my son and is been helping him a lots at school with is "talking"

I suffer from anxiety and this little toy helps a lot. It’s heavy and makes nice “clacking” sounds. It’s durable and dropped a few times and still working. Tried other fidget stuff on here and this is by far the best. rather spend the extra bucks than buying a off brand cheap version. 5 stars !!

Best stress product I've ever encountered. Only one I've found that actually worked well enough to compel me to buy it.

This is a perfect fidget toy for any age.
It is does have a noise when the metal cubes hit each other.
It also came with a case! Which has been nice to have.
After playing with it so long the color doesn't wear off.
The hinges have had no problems! Very durable.