The Magic of the Midsole
The key to the Peg Turbo, as noted earlier, is the lightweight foam in the midsole. Lightweight foams are nothing new, of course. But typically, feathery EVA midsoles compress easily and are slow to recover adidas nmd womens cheep sale their shape. ZoomX, by comparison, is still highly compressible under your weight (giving you the soft landing), but it rebounds quickly to propel you forward.The foam is made from Pebax, which is more typically used for plastic bridges and other molded parts in shoes. For example, Mizuno has used it in a Wave plate. Pebax has a lower density than some thermoplastic alternatives (thus, it’s lighter), but is also flexible, resists impact, and returns energy. Those properties remain when it’s blown into a foam.
Adidas Gazelle mens says this new foam weighs roughly one-third as much as Cushlon—the midsole material you’ll find in the ordinary Pegasus—yet delivers more cushioning than that shoe. It also delivers greater energy return—Nike reports ZoomX returns 85 percent. In tests of running-shoe cushioning systems at the Runner’s World Shoe Lab, we typically see “energy return” (the percentage of energy input that is recovered; the rest is generally lost as heat) in the 40 to 60 percent range, with Adidas’s Boost topping the charts near 70 percent. The Peg Turbo measured 69 percent energy return in our lab. (Our measurements come from an impact test of a full sole unit, which includes rubber outsoles and layers of glue.)Because of the foam’s light weight, Nike is able to use more of it, too. The stack heights (a measure of all materials that separate your foot from the road) for both versions of the Pegasus are nearly identical. In the case of the Peg Turbo, that’s very thick for a go-fast shoe.
Adidas Superstar 2018 In our real-world testing of the shoe, we found the Peg Turbo is exceptionally versatile. I wore it in the Mt. Washington Road Race, a 7.5-mile run that ascends 4,600 feet to the mountain’s summit. For such a climb, you want a firm forefoot that doesn’t waste energy on toe off. This shoe delivered, with enough pop to power uphill. When I reach the summit finish line, however, I change shoes, opting for something squishy soft like a Hoka One One for the long jog back downhill. This year, I wore the Peg Turbo for the descent, too, finding it adequately soft for such a punishing plunge—and my legs were no worse for the wear in the following days than in previous years.
Adidas Gazelle mens says this new foam weighs roughly one-third as much as Cushlon—the midsole material you’ll find in the ordinary Pegasus—yet delivers more cushioning than that shoe. It also delivers greater energy return—Nike reports ZoomX returns 85 percent. In tests of running-shoe cushioning systems at the Runner’s World Shoe Lab, we typically see “energy return” (the percentage of energy input that is recovered; the rest is generally lost as heat) in the 40 to 60 percent range, with Adidas’s Boost topping the charts near 70 percent. The Peg Turbo measured 69 percent energy return in our lab. (Our measurements come from an impact test of a full sole unit, which includes rubber outsoles and layers of glue.)Because of the foam’s light weight, Nike is able to use more of it, too. The stack heights (a measure of all materials that separate your foot from the road) for both versions of the Pegasus are nearly identical. In the case of the Peg Turbo, that’s very thick for a go-fast shoe.
Adidas Superstar 2018 In our real-world testing of the shoe, we found the Peg Turbo is exceptionally versatile. I wore it in the Mt. Washington Road Race, a 7.5-mile run that ascends 4,600 feet to the mountain’s summit. For such a climb, you want a firm forefoot that doesn’t waste energy on toe off. This shoe delivered, with enough pop to power uphill. When I reach the summit finish line, however, I change shoes, opting for something squishy soft like a Hoka One One for the long jog back downhill. This year, I wore the Peg Turbo for the descent, too, finding it adequately soft for such a punishing plunge—and my legs were no worse for the wear in the following days than in previous years.
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