JBL Tune Flex Showdown: Noise-Canceling & Small Size Tested for Travel We put the JBL Tune Flex to the test on multiple travel adventures, from packed airplanes to bustling train stations. Their compact, pocket-friendly design makes them ideal for on-the-go use, and we were impressed by how seamlessly they fit into our daily routines. The noise-canceling feature performed reliably, offering a comfortable "soundproof bubble" during long journeys-though not entirely eliminating the hum of turbulence or nearby chatter. For music lovers, the audio quality was crisp and immersive, with balanced bass and clear highs that kept us entertained. Battery life lasted 12 hours, which we found adequate for most trips, and the touch controls were intuitive. While they aren't the most discreet or sporty option, their blend of functionality and style suits travelers who prioritize ease and performance. Overall, they're a solid choice for those seeking reliable noise cancellation without sacrificing portability.