When you fly, in-flight entertainment systems often require you to plug wired headphones into the headphone jack to hear sound, preventing you from using AirPods or Bluetooth headphones. The AirFly connects to these kinds of systems, allowing you to listen wirelessly using your AirPods.
AirFly is a small Bluetooth device that's about the size of the AirPods themselves. You connect them to the AirPods over Bluetooth and then use a small cable to plug the AirFly into any headphone jack that requires a physical connection.
This is a bit of a niche product because this likely isn't a situation most people run into on a daily basis, but for long-haul flights where in-flight entertainment is essential, the AirFly is a useful little addition to your carry-on. It's also handy for workout equipment at the gym that requires a physical connection to listen to the gym's entertainment offerings, or in a car that doesn't have native Bluetooth support.
As previously mentioned, the AirFly is similar in size to the AirPods, and it comes with a travel pouch, so it's easy to take with you. Along with the pouch, a 3.5mm to 3.5mm stereo audio cable is included, plus there's a micro-USB to USB-A cable for charging the AirFly.
The AirFly has a built-in battery that will last for approximately eight hours, and it can charge from any USB port.
You can purchase the AirFly from Twelve South's website or from Amazon.com for $39.99.