3 stars only because it has rubber on the cooling side!!! If it had aluminum to absorb the cooling, it would have much better performance!!!

Very high quality but they have installed the wrong surface on the back, I would prefer it to have an aluminum surface instead of rubber, it does the job but not as much as I expected, as a construction material very high quality though!

Good but don't buy it, there are much better ones available. The surface that touches the phone is plastic, it would be better if it was made of iron for better cooling.