As you're walking, it's springy. You're not simply walking on the hard ground. I don't know what it is, but in any case I don't have any back pain any more. It's striking. I used to have a lot of back pain if I spent a long time standing.
These do come at a price. They’re definitely pretty high-end in terms of cost. But that’s nothing compared to what I had to spend on my health insurance and so on because of my old health problems. I’m happy to pay for these shoes, and I’d recommend them, too. They’re really great.