dr. selner: they're great for kids. as for seniors, they're indispensable. >> and you also said that walkfit platinums are great for athletes too. >> they are great for athletes. when you run or jump, you're hitting the ground with three to four times your body weight. that's 300 to 400% more pressure on your joints. you'd be foolish not to have walkfit in all your athletic shoes. >> well, i know i use orthotics in my golf shoes. it really makes walking the golf course a lot easier. >> and, stuey, they can also give you a much more balanced swing by getting your pressure back over your heels, off the ball of your foot where you're out of balance. >> and they last a lifetime, guaranteed. in our last show, we actually ran a 52,000-pound steamroller over the walkfit to show how durable it is. it came out a little dusty, but as good as new with its support and cushion ability intact. >> but since then, we found a little more practical example of just how good the walkfits are and how long they last. >> last year, we got a c