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 on this support brace stays for long-lasting integrity Adjustable, detachable suspenders keep the belt in place Rubber track webbing 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 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