There are a few things to look for when selecting a Lumbar Support Pillow. The first is the size of the pillow. Most come in standard sizes such as small, medium, and large, but you may need to go up or down a size depending on your body type. Second is the type of material the pillow is made from. Some are made from soft synthetic materials while others are made from natural fibers like cotton. Finally, consider whether you want a removable or washable pillow. removable pillows can be washed in the washing machine while washable pillows can be soaked in water and then dried.