I thought I was buying a regular brush to straighten my hair, but it is much better.
First of all, its bristles are soft without hurting the skin or damaging the hair.
It has plastic in the front, so you don't accidentally burn your neck like with others.
It doesn't generate too much heat, so it protects the hair, but strangely enough, it straightens the hair much faster and easier.
The handle is long and has a nice material feel (it doesn't slip).
I got size No2 and now I want to get the bigger one.