A new report shows an alarming spike in the use of an e-cigarette device called JUUL. Health experts are concerned about its popularity among kids.

At first glance, you may not know the device is a vape.

“JUULs have quickly overtaken in the electronic cigarette department as the most popular brand, because these juul electronic cigarettes look like flash drives. they’re very stylish, kids love them,” said LSU Health Professor and Cancer Epidemiologist Dr. Edward Trapido.