Picking a lumbar support pillow to use in your car requires quite a few considerations. Here are some criteria you should go through to ensure you buy the right pillow to support your back while driving:

- The lumbar support pillow must not be too soft. If the pillow is too soft it will not give enough support for your back and might even result in more lower back pain as the support is not sufficient when you are driving.

- Pillow must be wide enough to support your back. Unless you are on the skinny side, look for a pillow that is wide enough so it can give sufficient support for the entire width of your lower back.

- Ensure that the pillow strap or elastic band is long enough to fit around your car seat else it will keep falling off your car. You also would not want to spend a lot of time re-adjusting the lumbar support pillow everytime you want to use it in your car.

- Make sure that the pillow is firm enough and does not flatten if you tend to slouch or have problem keeping up a good posture while driving.