Knee Defender
thingiverse
It is a piece of plastic that you put on the back of the airplane seat that is in front of you so they can't recline.
Download Model from thingiverse
With this file you will be able to print Knee Defender with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Knee Defender .