I was using this inside of 20 minutes from it's arrival at my door.  it doesn't weigh a ton and I move it around a lot.  Originally I had my huge 17" notebook on it - that beast of a notebook weighs 9.5 lbs.  Now I have my 13" notebook on it - at less than half the weight.  It holds up fine either way.   The only thing I would change if I could would be to somehow enable the mouse section to rise/lower independently.  For my purposes it is otherwise perfect.  I would not recommend this product for use in a household with cats, dogs over 25 lbs, or with small children without exercising caution as I could easily see them tipping the stand and testing the durability of your notebook.  I invested some time in selecting this unit by reading reviews of it and others that I met my specifications.  I like this unit - it's a practical space-saving mobile stand.