This review is for the Mbar Pro+ stand and I'm very happy with the product. I'm using this stand for a Lenovo Legion gaming laptop and my top criteria is to elevate the PC high enough and for the stand itself to not block air intake, which is at the bottom. This product does both. On my particular laptop model, the supporting arms run through the center of both fans, however, the thickness of each arm is only 7 millimeters, which is slim. I can feel with my hand plenty of air is flowing when the laptop is under heavy load. Since the stand is made of quality metal, it stays cool to the touch. The rubber feet keep the stand from sliding on my wooden desk. The stand elevates my PC high enough that I can place my keyboard underneath when not in use. I'm providing measurements that might be useful to some. The back supporting bars are are 13 mm thick. The back elevates to 13.5 cm, vertical. The arms, where the laptop rests, are 7 mm thick. The lowest portion of the stand elevates to 5 cm, vertical. The stand is light (not a drawback) and sturdy. I recommend this product if you need to elevate your laptop and want to provide plenty of airflow from underneath.