Adidas Ultraboost 20 ISS US National Lab sneakers in a Dash Grey and Blue Violet Metallic colorway. These performance running shoes feature a Primeknit+ textile upper for a snug, sock-like fit and a responsive Boost midsole with a striking iridescent blue finish. Designed in collaboration with the ISS National Lab, they include a branded tongue patch and a supportive 3D heel frame. The Continental Rubber outsole provides reliable traction for workouts or daily wear. Note: Visible staining on the toe box and light wear throughout.