Criss-Cross Lumbo Sacral. Medium/Large 32″ – 36″. Mild low back pain; lumbar muscle weakness; lumbar sprains and strains; mechanical or discogenic thoracolumbar pain. Durable elastic construction with hook and loop closure. Contoured waist for maximum comfort. Two elastic side pulls for optimal compression. Four adjustable posterior stays for stability and support. 12″ posterior heights. Not made with natural rubber latex.