Can't open or shut the back window of our truck. We opened it one time shortly after we bought it. It nearly fell off and we had a heck of a time tried to get it to close again. We haven't touched it since because we live in MN and if we can't chance not being able to get it shut next time cuz all the heat will go right out the window. You can tell it is a very cheap window and cheap plastic just like all the rest of the interior. This goes great with our cracked dashboard and broken cup holder.