adidas Racer TR21 Blue for Sale | Authenticity Guaranteed | eBay。The Adidas Racer TR21 is a versatile, running-inspired sneaker featuring lightweight Cloudfoam cushioning, a textile/mesh upper, and a rubber outsole. Designed for daily wear and light activity, it generally fits true to size with a, 8–12.9 mm heel-to-toe drop, and is often made with at least 50% recycled materials. Key Specifications: Midsole: Cloudfoam for cushioning.Outsole: Durable rubber.Upper: Textile and synthetic (often mesh). Closure: Lace-up. Sustainability: Contains a minimum of 50% recycled content. Key Features: Usage: Primarily casual, lifestyle, or light running.Design: Features a sporty, modern look with a supportive heel.Fit: Generally true to size.