The 3-In-1 Travel Pillow Set is unlike anything on the market, this pillow has a built-in removable insert so you can adjust the thickness of the pillow based on your personal preference and sitting positions, preventing your head being pushed forward. You now can sleep soundly even if you are sitting up on an airline seat with the help of this pillow! Made of high quality memory foam which molds perfectly to your neck. Built-in elastic strap makes it easy to attach to a carry-on luggage without taking up extra space. Great for travel or use for neck support anywhere you like.