Lasse, change often glasses and hearing my children release folding the acoustically, I decided to try this product. The material with which it is designed is very strong and rather beautiful (because I'm not a fan of plastic materials normally but this is rather successful), fasteners are very simple to install, the bezel and easy folding also to install and remove; and finally ... test the silent descent .... It's true! it goes down very gently and ABSOLUTE silence You do not hear a sound. In short, we will check for the use if this product is as good as it to air. But for now we are very satisfied. This is an excellent quality / price ratio. And as always impeccable delivery! I recommend it.