ObusForme Sit-Back Dual-Purpose Cushion features flexible, contoured ergonomic design that gives soothing relief to those experiencing discomfort in their lower back, buttocks or both. You can use the support cushion as a sit-back cushion or, you can use the support cushion as a proper backrest. Made using thermos-sensitive foam, the lower back support is designed to distribute the body mass evenly. Moreover, the lumbar support cushion promotes proper posture and spine alignment.