NothinButNet said:
ooh, those have ankle injuries written all over them
actually they are marketed as an orthopedic device, here's the beginning paragraph or two of a longer story about them. I haven't tried them but talked to a valet that loved them.
Alvaro Gallegos' feet slammed into the pavement mile after mile in the pre-dawn darkness. With each stride, he could feel the hard earth and his own energy colliding in his sneakers <!-- EMDASH--> — and boy, did it hurt.
<!--indent--> <!--endind--> Gallegos figured there was a better way. Now he's president of Z-Coil Footwear Inc. <!-- EMDASH--> — a 6-year-old New Mexico company experiencing enormous growth.
<!--indent--> <!--endind--> Z-CoiL<SUP>®</SUP> Footwear have reportedly curbed leg, back and foot pain using an idea that's been around for a hundred years: Put a little spring in your step.
<!--indent--> <!--endind--> Gallegos' shoe has a spring built into the heel and a supportive insole. It may look odd, but throngs of customers-turned-stockholders say it's a life-changing shoe.
<!--indent--> <!--endind--> "We don't even like to use the word shoe, really." said Jean-Paul de Jager, Z-CoiL<SUP>®</SUP> Footwear promotions director. "It's footwear. It's really more of an orthopedic device that deals with injuries and problems."
<!--indent--> <!--endind--> But don't confuse Z-Coil with the mass-marketed Nike Shox, de Jager said.
<!--indent--> <!--endind--> "Nike uses a spring sound on the commercial, but we've cut them up," he said. "No spring."
<!--indent--> <!--endind--> Z-CoiL<SUP>®</SUP> Footwear are built with an actual steel spring mounted at the heel with its own platform sole, he said.
<!--indent--> <!--endind--> On an obstacle course outside the company headquarters in Albuquerque, customers walk over mismatched planks and cobblestones with ease.
<!--indent--> <!--endind--> The springs are designed to absorb the impact of walking and running, but also work to balance the wearer on uneven surfaces, preventing twisted ankles, Gallegos said.
<!--indent--> <!--endind--> The shoes have come a long way since the first time he took a band saw to a conventional sneaker in 1989 and glued in a spring. The company went into business in 1996 after seven years of design and testing.
<!--indent-->