adidas | Shoes | Us5 Adidas Harden Stepback 3 Basketball 。Adidas Ultraboost 21 Primeblue low top running shoes in a red and black colorway with white midsoles. Brand: adidas. Item: Mens Ultraboost 21 Primeblue athletic running shoes / sneakers with responsive Boost cushioning. Color/Pattern: Bright red knit textile uppers with black knit accents, translucent red three-stripe midfoot cages, red heel counters, white Boost midsoles, and translucent outsoles with black and red traction zones. Gender/Size: Mens; tag size US 10.5, UK 10, FR 44 2/3, JP 285, CHN 275; standard width. Material/Construction: Primeblue textile knit uppers made with Parley Ocean Plastic, synthetic heel counters and lace cages, padded textile collars, full-length Boost foam midsoles, and durable Continental rubber outsoles. Country of origin: Made in Vietnam. Model/Style: adidas Ultraboost 21 Primeblue running shoes; inner label lists style code FY0838 with 01/21 production date. Outsole and traction: Continental rubber outsoles with translucent segments, flex grooves, and a supportive midfoot structure designed for grip and stability during running and training. Interior details: Soft red textile linings with cushioned insoles featuring PRIMEBLUE and \"Made With Parley Ocean Plastic\" branding. Performance and use: Lightweight, cushioned running shoes suitable for road running, walking, gym workouts, and everyday athleisure wear. Special notes: Please review all photos to confirm color, design, and style details before purchase.