The Ergodyne ProFlex 1600 Standard Elastic Back Support Brace is designed to remind workers of proper lifting techniques while also enhancing the body's intra-abdominal pressure, moving the stress away from the spine for back pain relief. The back support brace features an all elastic 9-in. body for extra-firm support. An easy-to-use hook and loop closure keeps the support brace securely fastened while in use and can be worn over or underneath clothing. Premium 9 in. / 22.9 cm all-elastic body provides firm support Contoured high-cut front panel for a comfortable fit Polypropylene stays for long-lasting integrity Adjustable, detachable suspenders keep the belt in place Support brace has rubber track webbing that prevents riding up Waist size ranges from 25 in. to 58 in. / 64 cm to 147 cm To clean the support brace, machine wash on cold; air dry We cannot guarantee that wearing a back brace will prevent workplace injury or be a cure for lower back pain Great for airport luggage handlers, warehouse/distribution employees, material handling, construction crews, maintenance, assembly/fabrication, landscaping/grounds and jobs that require heavy lifting ProFlex Back Supports provide lower back support and abdominal support To choose your size, use flexible measuring tape and find the circumference around your body at your belly button; the support should fit snugly around your hips with the front of the support two-fingers width below your navel