Sennheiser PXC 250 II ($140)
A frequent traveler’s checklist should include a passport, a durable piece of carry-on luggage, and a solid pair of noise-cancelling headphones. The PXC 250-II’s are exactly that, and are powered for up to 50 hours by a single AAA battery, so they won’t die in the mid-air. The fold-and-flip phones come with a carrying case and integrated volume control, and employ NoiseGard technology to significantly reduce background noise from stuff like jet engines and dudes in window seats whose thunderous snoring sounds like hell’s chainsaw.