What Our Gearhead(R) Experts Are Saying:"I picked up the Endorphin KDZ 2. 0 Shoe for a kid in my family who is hard on footwear, and it has held up impressively through months of daily playground use. The A/C closure makes getting them on and off genuinely independent, which is a bigger deal than it sounds, and the reinforced toe cap has taken a beating without showing much for it."From the first bell to the last lap around the block, the Endorphin KDZ 2. 0 Shoe from Saucony is built to keep pace with the boundless, unpredictable energy that defines a kid's day. Drawing on the same performance DNA as the adult Endorphin line, this shoe brings real running technology down to a size that fits the next generation of movers. The breathable textile and leather upper keeps airflow moving during full-effort sprints and long afternoons on the blacktop, while lightweight cushioning absorbs impact so young feet stay comfortable from morning through after-school practice. A higher toe spring encourages forward propulsion with every step, and the reinforced toe cap stands up to the scuffs, kicks, and unexpected curbs that come with being a kid. The A/C closure dials in a snug, secure fit without the frustration of laces, making the Endorphin KDZ 2. 0 a shoe that kids can get on and off on their own and parents can feel good about putting them in.