The Patent Pending STAUBER Best Sky Shield allows you to fortify yourself during air travel! Easy Installation pops up in seconds. Collapses to fit in your bag and carry on. Install on flights next to strangers to limit direct exposure. Adjustable straps for a variety of armrests. Slim design allows for the armrest to be utilized. Plastic shield can be sterilized using all general cleaners. Angled shield does not obstruct movement to and from seat. Use multiple guards to limit exposure from various directions. It works well with most travel pillows - even an inflatable travel pillow! Great seat divider and seat separator that can be used in addition to a disposable airplane seat cover and armrest extender! Small profile is no larger than typical travel toiletry bag.