I've been struggling with lower back Spondylolisthesis for quite a while and looking for something lightweight, breathable, washable, supportive, this is what I've decided to get, if anything. It meets my criteria and seems to work for other folks (according to Amazon and other reviews).Bauerfeind LumboLoc Back Support
(different sizes from which to choose)
Here's their size guide, by the way. One reviewer at Amazon said the product tends to run small:
So, that's my put for now. At the least, it seems to be a good option.