Sleeper sling surprise: an odd travel gadget finally helped me sleep on a long flight

A Washington Post travel writer tests the Armbie, a polyester arm sling marketed as a sleep aid for flights, on multiple long-haul journeys and finds it unexpectedly effective for sleeping in economy. It wraps the arms for a cozy, swaddle-like feel, is compact and washable, and costs about $25, but it can be warm and isn’t for everyone. Compared with neck pillows, it’s a quirky yet useful option for certain travelers.