Lumbar Support Adjustable Seat Cushion It allows you to sit upright for long periods of time, protect your spine and hips, and add far infrared rays to help circulation, so sitting is no longer just about resting! It is a deep rest! The back supporter has an ergonomic design and is developed according to each person's [weight], [body shape] and [sitting needs]. It can be customized and adjusted, and can distinguish between...