This laptop stand was chosen on perceived durability & its compact size. When it arrived (very quick delivery), I was pleased to see that the construction looks solid (aluminium & steel) & durable. I don't know how the adjustable rear leg works, looks to be by friction, but so far its worked with out issue. The stand is not overly large, but holds a Dell Latitude E7740 without problem and the slots allow airflow into the base of the laptop - no overheating. Its not the cheapest stand by any means but it appears high quality & should last for years - overall, very pleased with this.