Key Information: ‣ Size: Standard ‣ Uses: Behind The Massage Tool helps relieve back pain and tension through spinal relaxation and lumbar support ‣ Directions: Place on a flat surface and lie back for gradual spinal extension and relaxation ‣ Warnings & Precautions: Use with caution if you have any pre-existing spinal conditions. Consult a healthcare professional if discomfort occurs