The original Winbag is one of the most widely used tools for vehicle entry. The rigid plastic inlay inside the cushion enables the Winbag to be inserted into the smallest of gaps between the vehicle door and body. The original Winbag then remains very stable and can be pumped up with the attached hand pump. The width of gap achieved by the original Winbag can be regulated by the amount of air pumped into it by hand. The Winbag has a built-in check valve to keep the air inside the cushion until it is released by pressing the vent valve button on the tube.