In Storm Viper 20Km Paris you will find everything you need in a mixed shoe: the perfect union between reactivity and stability.
The REACTIVE BALL midsole comprises a material with great cushioning capacity and energy return. After absorbing the initial impact upon landing, it recovers its original shape with barely any deformation thanks to its composition of expanded particles that provide an excellent return of energy. Maximum energy return by absorbing the kinetic energy of the race and returning it to the athlete.
REACTIVE BALL reactivity makes it necessary to increase stability. The new Storm Viper achieves this via three important modifications: incorporation of the STABILIS SYSTEM in the heel, a bigger base for impact upon landing and a wider sole.
It incorporates the revolutionary STABILIS SYSTEM, comprising the injection of a more rigid piece into the heel that supports the movement of the foot upon landing and provides greater stability to the foot strike. This solidity improves performance since the foot immediately finds stability prior to pushing off. It also increases protection of the joints avoiding injuries.
The upper of the shoe is made of lightweight and resistant yarn, woven as one single piece so that the foot finds maximum support in the most comfortable way. VTS SYSTEM technology facilitates perspiration while JOMA SPORTECH ensures a perfect fit.
The DURABILITY technology in the sole incorporates a high density rubber that resists the abrasion suffered by the soles when running on tarmac. This DURABILITY rubber is located only in the areas of greatest contact. This reduces the weight of the shoe and facilitates the return of energy provided by the REACTIVE BALL midsole.
It weighs 324 g and has a Drop of 10 mm.