Most standard travel pillows have a semicircular shape that wraps around the neck to support the neck, head, and chin. These U-shaped pillows often have memory foam or microbead filling, but there are also inflatable neck pillows.
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You've probably used a U-shaped travel pillow if you've ever been on a long flight or train ride. These inadequate pillows are 'designed' to support your neck and head while you sleep, helping you to avoid stiffness and pain.
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Mothers carting off kids are in the habit of having them safely seat-belted with neck pillows before scuttling them off on long drives. And if you are going on a long-haul trip by air, land, or sea, the obvious answer is that you need a travel pillow more than you know.
Can You Bring a Pillow on a Plane for Free? While some airlines allow you to bring a pillow on the plane free of charge, others charge a fee for this additional luggage add-on.
Pillows generally don't count toward your carry-on or personal item limit, so filling a pillow case with clothing or other items is a smart “hack” to beat extra baggage charges.
Pillows are permitted in both carry-on bags and checked bags, according to the TSA's website. But while you'll have no problem bringing a full-size pillow through security, it's up to the airline to decide if it counts as your personal item.