Pressing PET bottles to save space

I recently came accross this article explaining how to easily press PET bottles using your feet, in order to reduce their volume and more efficiently store used plastic bottles after using them, for future recycling.

The article describes the simple 3 step technique to get plastic bottles to a fraction of it's initial size. The only downside to this process is the relatively loud noise it involves, because of plastic PET bottle's material properties.

Being made out of thick PET plastic, by blowing hor air in a tube, it transforms into a very thin yet slightly rigid plastic film that we call a plastic bottle and that which most likely use every day for water, soda, milk, alcohoolic bevareges etc.