Neoprene[CHOOSE YOUR SIZE] - Pay attention to measure your waist at the level of your navel, not your pants 'size. S/M: Fits circumference around navel 24.4-30 inch. L/XL: Fits 30-38.6 inch. XXL: Fits 38.6-51.2 inch. 3XL:Fit 54-63 inch. 4XL: Fits 63-68 inch. 5XL: Fits 68-74.8 inch.[BACK PAIN RELIEF] - The FEATOL back brace for men lower back is effective in relieving the pains that caused by disc herniation, sciatica, scoliosis and other spine problems. This lower back brace allows you to enjoy your life without bother of lower back pain.[GREAT SUPPORT] - With the 4 strong support strips and an extra lumbar pad, FEATOL lower back support belt provides with 360 stronger support for your lower back, making sure you can keep in proper posture in daily workout, as well as weight lifting or training in the gym.[Breathable Fabrics] - FEATOL back support belt for women & men is made by breathable fabrics. You will not feel too hot or too bulky when you wear it. The inner belt is made of elastic neoprene which can provide with very good support without limits your movement. And the outer elastic band with high-quality Velcro gives you a large range to adjust the belt to fit your body.[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.