NEVER SELECT BY PANTS SIZE Measure your waist at the level of your navel while you are standing relaxed. Perfect Fit with 6 Sizes: M Waistline: 31.5"-37.4" (80-95cm), Weight: 121-143 LBS (56-65KG) L Waistline: 35.4"-41.3 (90-105cm), Weight: 143-176 LBS (65-80KG) XXL Waistline: 45.2"50.3" (115-128cm), Weight: 209-242 LBS (95-110KG) 2 SETS REMOVABLE SUPPORT: Back brace comes with removable bionic spine supports and you can freely choose to insert steel support or ABS support to meet your different needs. Extra stability from 2 flexible steel supports along the waist side cooperates with large area aluminum supports on the back that fasts lower back pain relief, back strains, arthritis, relieve sore and aching backs/muscles, forget the pain from a herniated disc, sciatica, scoliosis and help maintain posture correct. SAY GOODBYE TO THE PAIN OF THE PAST: Back pain is common. More than 80% of people have episodes of low back pain during their lifetime. It can be frustrating when pain interferes with daily life. EGjoey back brace provides comfortable and robust support thanks to the 8 support straps on the back wrap around your belly for perfect support. Lower back support offers better balance and posture and protects our back from injury when lifting heavy objects, yard work, or doing some sports. PREMIUM BREATHABLE FABRIC: You want to be as comfortable as possible, especially if you sweat a lot in sports where you know precisely what it feels like to wear non-breathable fabrics and you can try breathable fabrics with eyelets. Breathable, lightweight, and washable quality materials that the back braces for lower back pain use are made, back support belt is comfortable and not sultry even when weight workout, golf, running, losing weight, and all kinds of exercises. ADSORBED IN YOUR ABDOMEN: Back brace for lower back with double-layer design considerable stability on your abdomen and the adjustable compression strap of the posture corrector provides proper fit and minimizes the sliding(Wearing method can refer to the video to avoid wearing it backward). The back support belt allows you to walk, sit, bend or stretch, without worrying about pain or discomfort and enjoy the freedom of movement again!