✓?1OO% SATISFACTION?- We are confident that you will love the back brace. If you are unhappy with your back brace, please do not hesitate to contact us. ✓?NEW UP-GRADE VELCRO, STRONG ADHESION?- The back support belt body is fixed by a 3.3'' *7.2'' wide size velcro, while the 2 elastic straps have 2 additional 1.8" *2.4" wide velcro fasten again, providing a strong adhesion which far beyond your expectations!. ✓?STRONGER SUPPORT, BREATHABLE FABRICS?- With 3pcs curved 26° memory support bionic spine strips stays scientifically fit your lumbar spine. Air mesh holes and 80% soft nylon fabric provide a comfortable and cool experience all day. Wider waise straps distribute pressure and relieve body discomfort. ✓?IMMEDIATELY RELIEVE LOWER BACK PAIN ?- The DARLIS back brace works by gently stretching the spine, reduce the spine burden. Relieve lower back pain immediately and help to restore the healthy spine curve. Great for people who suffer from herniated disc, the L4/L5 and L5/S1 chronic sciatica, degenerative disc disease, arthritis, soft tissue damage lumbar back pain. Wear back brace when you sedentary work, long distance drive, heavy lifting, and daily housework. ✓?CHOOSE YOUR SIZE?- Pay attention to measure your waist at the level of your navel, not your pants' size. Fits circumference around navel 39.4-43.3 inch. Fits 43.3-51.2 inch. Fits 51.2 -57.9 inch.