Product review (5 stars): Great!
Interesting set up.  A series of little cut outs to attach the 4 buttons that are part of the compactor.  At first i was very hesitant, and thought that using the cut outs would cause the plastic to rip -but it didn't!  Have used these for about a month, changing once a week, and have no rips or leaks!  Wonderful!  Heavy duty plastic.  I would like a drawstring or some way to tie/secure it, but a little stapler works fine to keep it closed.