Product Story The Mercedes-AMG PETRONAS Kart Cat NITRO driving shoes are for fans that understand the meaning and rush of Karting. The reinforced toecap and EVA Midsole and a dynamic silhouette all combine with the marque's iconic colors. On top of that, this shoe was built with the latest NITRO Infused technology, which provides superior cushioning and comfort. FEATURES & BENEFITS The upper of this shoe is made with at least 20% recycled materials as a step toward a better future. NITRO Infused: Enclosed nitrogen-injected foam designed to provide responsiveness and cushioning in a lightweight package. Details Heel type: Flat Shoe width: Narrow fit Shoe pronation: Neutral Heel-to-toe-drop: 0 mm Modern low profile Synthetic upper with stitched details NITRO Infused midsole Rubber outsole Mercedes AMG-PETRONAS logo PUMA Youth: Recommended for older kids between 8 and 16 years – for junior styles.