How does a jet smash the sound barrier? Thrust and propulsion from a scramjet engine. The Under Armour Kid’s Grade-School UA Scramjet 4 Runner combines the speed of the original Scramjet with the power of Charged Cushioning® and the durability of a HeroFlex sole.
- Sublimated upper with molded panels provide extra protection & the ultimate comfort fit
- External heel counter for increased stability
- Plush sockliner maintains it’s shape for all-day comfort
- Anti-odor technology applied to sockliner to prevent the growth of odor-causing microbes
- Charged Cushioning® midsole uses compression molded foam for ultimate responsiveness & durability
- UA HeroFlex sole provides extra flexibility to help your foot you move smoothly in every direction
- Strategically placed rubber pods beneath the heel & forefoot for greater durability with less weight