In case your clinician has recommended you to use an orthopedic pillow, choose the Ergo21 lumbar cushion that works wonders in offering proper support to your tailbone muscles. The state-of-the-art LiquiCell technology adds to its USP and ensures that you have a pain-free experience even if you are sitting for hours. This orthopedic pillow is designed using four water-filled membranes that are hand-stitched on the cushion. These membranes distribute pressure in the thigh muscles and let your body glide. This reduces soreness in the tailbone, prevents fidgeting, and improves the blood flow by 150%