Nike LeBron James XXI 21 Optimism Multicolor Sneakers HF5353 。The Nike Air Zoom LeBron 21 XXI in men\'s size 10 is a vibrant basketball shoe from the \'Optimism\' collection. This limited edition sneaker features a lace-up closure, low-top silhouette, and a multicolor design suitable for activewear during the summer, fall, and spring seasons. Made with lightweight synthetic materials, it offers arch support, cushioning, and breathability for optimal performance on the basketball court. With a standard shoe width, rubber outsole, and foam insole, these Nike LeBron sneakers blend colorful retro aesthetics with modern athletic functionality.