The Nike LeBron 21 'Optimistic' HF5353-400 features a psychedelic, mismatched color gradient. The left shoe transitions from Bliss Pink to Laser Orange, while the right shoe displays a gradient from Photo Blue to Vapor Green. The mesh upper includes a 360-degree zonal cabling system for superior containment, creating an optical illusion with its multicolor lines. The Phylon midsole, with Zoom Air cushioning in the heel and forefoot, is complemented by contrasting vibrant hues. A TPU shank plate provides foot support and structure. The exposed cabling system symbolizes LeBron's desire to protect his daughter, resembling oyster shell ridges. This model was released on May 1, 2024, with a retail price of $200. Closure: lacing. Toe type: round toe.