The adidas UltraBoost 21 Cold.Rdy ‘White Signal Green’ is a performance running shoe specifically designed for the cold-weather season. It boasts fluorescent accents that add a pop of color to the overall design. The upper is constructed with a white Primeknit+ material, which includes no-sew overlays and a molded heel counter featuring embossed green lettering showcasing the iconic UltraBoost branding. The shoe's sock-like build is lined with insulated black textile, providing warmth and comfort. Additionally, a neon green pull tab is added at the heel for easy on and off. The midsole is equipped with a metallic teal hue, adding a stylish element to the shoe. It is supported by a Continental WinterGrip Rubber outsole, ensuring exceptional traction on various surfaces. Moreover, this shoe is eco-friendly, as it is made with 50% recycled materials, contributing to a sustainable future.