Key benefits - Adjustable back brace with removable spine supports to meet different needs - Two flexible steel supports along the waist plus large area aluminum back supports for stability and faster relief from lower back pain, strains, and arthritis - Eight back support straps wrap around the torso for secure support, better balance and posture, and protection during lifting, yard work, or sports - Premium breathable fabric that is lightweight, washable, and comfortable during workouts, golf, running, weight loss, and other activities Size and fit (6 sizes) Measure your waist at the navel while standing relaxed. Do not rely on pants size. - S: Waist 25.9-31.5 in (66-80 cm); Weight 99-121 lb (45-55 kg) - M: Waist 31.5-37.4 in (80-95 cm); Weight 121-143 lb (56-65 kg) - L: Waist 35.4-41.3 in (90-105 cm); Weight 143-176 lb (65-80 kg) - XL: Waist 41.3-45.2 in (105-115 cm); Weight 176-209 lb (80-95 kg) - XXL: Waist 45.2-50.3 in (115-128 cm); Weight 209-242 lb (95-110 kg) - XXXL: Waist 50.3-56.6 in (128-144 cm); Weight 242+ lb (110+ kg) Removable support sets - Comes with removable bionic spine supports and you can choose to insert steel or ABS supports to suit your needs - Two flexible steel supports along the waist, paired with large area aluminum supports on the back, provide extra stability and fast relief from lower back pain - Designed to help with back strains, arthritis, sore and aching backs and muscles, herniated discs, sciatica, scoliosis, and to support proper posture Pain relief and daily support - Back pain is common; more than 80% of people experience low back pain during their lifetime - The back brace provides comfortable, robust support with eight back straps that wrap around the torso for solid support - Helps with lower back support, balance, and posture, and protects the back during heavy lifting, yard work, or sports Premium breathable fabric - Breathable, lightweight, and washable materials used in the back brace - Eyelet design enhances airflow to keep you cooler during activity - Comfortable and not sultry during weight workouts, golf, running, and various exercises Use scenarios - Lifting heavy objects at work, home projects, or during yard work - Sports and workouts such as weight training, golf, running, or other exercises where back support is beneficial - Daily wear for improved posture and back support during long periods of standing or daily activities