This product is made of breathable and high elastic straps with 2
bended aluminum stays to support the lumbar and sacral area. It
designed to correct the poor posture and relieve the back pain. 2
bended aluminum stays are lightweight and very anatomically fit the
back. 2 puller straps cross to the shoulder to the abdomen can
position the shoulder and vertebra in correct posture and give more
compression for the abdomen and lumbar.