Bug Pak
From Wookieepedia, the Star Wars wiki.
A Bug Pak, also known as bug repeller was a device worn over the head as an insect repellent. The device included a power supply worn on the back and projector a force field from above the wearer's head down to a collar.
Han Solo and a number of Imperial stormtroopers once wore Bug Paks in the forests of Kashyyyk.
