Built for all-day play and long-term endurance, the adidas RapidaRun Knit J sneaker in 'Carbon' aids in optimal support and durability. The kids’-sized shoe is outfitted with an adaptive knit upper that adjusts to the shape of your foot as you run, ideal for developing feet. The TPU midfoot cage and heel counter help provide additional reinforcements. RapidaRun rests above a Cloudfoam midsole to absorb each step.