I have an extremely sore back - mainly from very tense lower back muscles. I do lots of stretching and spinal decompression using a Teeter Hangups Inversion Table but when I've got to move fast I use this back brace. It's very nice. I really like the double overlapping Velcro closure and firm but stretchy material. Provides comfortable compression. The belt widens to a much more substantial width as it covers your back. The lower spine padding actually makes the pain much more manageable for me as I work on cars and sometimes pain disappears altogether. This brace stays in place as I slide under vehicles or bend over engine compartments or am doing yard work.
I stay in shape so we're not talking light activity here - I need something that works during heavy lifting or vigorous activity. Ordering another one to keep in the truck of my car for emergencies, and I can even see this coming along with me hiking, fishing, etc. just in case.