When you are suffering with back pain, particularly if due to a pulled muscle or bruising, the area requires blood, richly oxygenated, for faster healing.
Unfortunately, the pain and inflammation in the back area can prevent this from happening. By delivering the electromagnetic waves through the wand of an electronic acupuncture device, you can touch specific pain relief acupoints that correspond with your back.
This helps release the constriction of the blood vessels around the injured area so that blood can flow more freely, delivering the healing oxygen it needs.

If purchased at regular retail prices, Earth Footwear is expensive. I try to find sales or closeouts and of course, don't forget eBay. I don't recommend the vegan styles as I felt that the pair I purchased did not wear very well for the price that they cost. I find them to be great for back problems and discomfort.
But even if your back doesn't hurt now, I recommend wearing these shoes so that hopefully it will not start.