really beautiful build quality and ingenious tilting system with multiple height adjustments. the hardness of the material allows good holding on knees sitting in a chair for example and good heat distribution. on a desk, the wide angle of the computer is a big plus for typing comfort and good visibility of the screen (right height of the angle of vision). folds easily for storage in its pouch (1 cm thick only), takes up little space in the backpack and protect your PC.
I take off a star because the tilting strips are not clipped, they can dislodge from their grooves when lifting the PC inadvertently. so be careful when moving the set, the tray can be folded under the weight of the PC.
One last point: the plateau width with just a laptop screen 15.6 "(the PC overflows about 4 cm each side) with a laptop 17.", it may not overflow evil no problem on a flat surface, but probably not very stable on the knees ...