It is the best back support I could find. I compared different models for the past 13 years, and I always came back to this one.
In 2004 I injured my back. My physical therapist gave me this back brace to wear. I still have it and use it today (July 2017). I tried other models, but they did'n match the quality of this one. Some of them are too rigid (they don't really hug your back, or they don't 'move' with your back moves), others are more 'hugging' and flexible, but my back sweat a lot just after 30 minutes of wearing them. Some are both, rigid and hard to use (multiple straps overlapping each other)... I always came back to this model. Is flexible, but very supportive, the internal side is cotton and your back doesn't sweat. It doesn't roll up or down, it stays in place, it is very easy to use. And, in addition it lasts forever! I cannot count how many times I washed it in the washing machine over the past 13 years! Excellent quality. Tho the person who designed it and the people who made it: Thank you, Thank you, Thank you!!!