Handy, lightweight and very easy to assemble, its strong point is still three fans will be positioned where you want, especially as the heating zones laptops are different (for me the 3 main areas of my heating PCs are left :-)).
I already measure the positive impact in recognizing a net cooling of the areas concerned.
Other positive point: Fan connector socket itself is a USB socket so no loss; and fans are perfectly silent.
I just wish ... a fourth fan, or at least the possibility of adding an afterthought !! Because there would be quite the place for.