The LapStacker changes the game!! If you're a wheelchair user there is no need to think twice about investing in this product. It is everything that I have been looking for in the 5 years being in the chair. As a college student, this product has been especially helpful with carrying my textbooks on my lap and giving me that extra security that it won't fall! Again, you NEED this in your life! And HUGE thank you Adaptdefy for the amount of times their product has saved me from dropping and breaking things.