The upper is crafted with Primeblue, a breathable, synthetic material made from plastic debris reclaimed from the ocean. Plastic overlays reach across the textile and secure the laces through 4 pairs of eyelets. Like other Ultra Boost 21 models, the "Vivid Red" variant houses a full-length Boost midsole that provides cushioning and additional energy return.
What do our StockX experts love about this running sneaker? The lack of bold branding allows the Vivid Red hue to be the main focal point. The adidas Ultra Boost 21 Vivid Red was released on February 4, 2020, and retailed at $180.