Multipurpose durable air cushion devices with rigid edges and fine air control valve. Suitable for positioning panels, bonnets and boots, prior to fitment. 2mm Thickness and semi-rigid construction allow bags to be slid between window frame and weather-stripping for improved access for emergency vehicle opening tools. Soft air cushion is gentle on paintwork, frame, beadings and glass. Can also be used for positioning kitchen units, windows and doors.