Features: -It is ergonomically designed to relieve your upper, middle and lower back pain and back toning, help you achieve healthy posture and maintain the natural curvature of the spine. -Memory foam with bamboo charcoal fiber back cushion can keep its shape well and be used repeatedly. -With adjustable elastic straps that ensure the back cushions stay on the seat without slipping or sliding. -3D mesh cover design, breathable and hypoallergenic. -Suitable for driving, lying on the couch, watching TV, playing video games or studying and even working Specification: Material: memory cotton+cloth Colour: black Size: 47*40*14cm Package Included: 1x Lumbar cushion .