Adidas Ultra Boost 20 Stella McCartney Women's White Running Trainers H00034

Adidas Ultra Boost 20

No-Dye Primeblue Construction & Energy-Return Boost: The adidas by Stella McCartney Ultraboost 20 "Off White / Off White / Off White" Blend eco-conscious design philosophy with high-performance running technology in an elevated, monochromatic silhouette from designer Stella McCartney. The H00034 strips back conventional manufacturing by employing an innovative no-dye technique, allowing the raw, organic beauty of the undyed textile to define the all-"Off White" aesthetic while drastically reducing industrial water consumption. Built on the proven Ultraboost 20 framework with a full-length Boost midsole and Parley Ocean Plastic tooling, this runner merges sustainable purpose with responsive road energy.

Benefits: Engineered for road running, distance training, boutique studio fitness, and high-fashion athleisure styling, this shoe prioritizes step-in comfort, maximum energy return, and environmental responsibility. The plush Boost midsole cushions hard landings on asphalt, rebounding quickly to propel each forward stride and stave off leg fatigue over double-digit mileage. Up top, the seamless Primeknit bootie wraps the foot like a second skin, offering targeted breathability and adaptive flex that moves with your natural gait cycle.

Key Features:

• Full-Length Boost Midsole: Expanded thermoplastic polyurethane (eTPU) pellet carrier providing springy, temperature-independent energy return and plush impact dampening.

• Water-Conserving No-Dye Technique: Undyed textile chassis designed to cut freshwater waste and chemical runoff during production, showcasing the natural texture of the raw yarns.

• Primeblue Parley Ocean Plastic Upper: Woven knit upper utilizing 75% Primeblue yarn containing upcycled plastic intercepted from coastal beaches, completely eliminating virgin polyester.

• Adaptive Primeknit Construction: Seamless, engineered knit upper that expands and contracts with the natural swelling and movement of the foot during runs.

• Stella McCartney Designer Caging: Tailored midfoot structural support cage and external heel counter designed to blend modern runway aesthetics with foot containment.

• Continental™-Style Rubber Outsole: Hard-wearing rubber perimeter engineered for reliable traction on dry and wet city roads, track surfaces, and fitness studio floors.

Product Details:

• Product Name: adidas by Stella McCartney Ultraboost 20

• Silo: adidas Running / Ultraboost 20 / Stella McCartney Collection

• Category: Women's Performance Road Running & Luxury Athleisure Footwear

• Colourway: Off White / Off White / Off White

• Style Code: H00034

• Upper Material: Undyed adidas Primeknit Textile (75% Primeblue Parley Ocean Plastic Yarn in upper textile)

• Midsole Technology: Full-Length adidas Boost Foam Platform

• Outsole: Flexible Stretchweb Rubber Outsole

• Closure: Traditional Performance Lace-Up System with Integrated Cage Eyelets

• Fit: Regular Women's Performance Athletic Fit

Buyer Guidance & Fit Profile:

• Who This Product Is Best Suited For: Ideal for dedicated runners, luxury athleisure enthusiasts, and eco-minded athletes seeking a high-performance running platform elevated by high-fashion design. Coordinates effortlessly with ribbed neutral leggings, monochrome cream track sets, oversized lightweight trench coats, and technical running shorts. Not designed for off-road mud or technical trail running (the open-cell Boost foam and light undyed knit are optimized for clean road and gym use).

• Fit & Sizing Determination: Fits True to Size (TTS) in standard adidas women's performance footwear sizing. The Primeknit upper fits snugly around the instep and midfoot like a sock while offering natural stretch at the toe box. Wearers with broad feet (D+ width) or those who prefer a roomier toe box for long-distance swelling should consider sizing half a size up (0.5 size up) to avoid feeling restricted across the midfoot cage.

• Recommended Conditions & Activities: Optimised for road running, treadmill workouts, studio fitness classes, and clean, dry urban everyday wear. Care Recommendation: Because this model utilizes an undyed, raw textile upper, apply a gentle eco-friendly fabric protector spray before first wear to guard against premature staining; clean surface dirt immediately using a soft brush or microfiber cloth dipped in cold water and mild eco-detergent; do not use bleach or optical brighteners, as these will alter the natural undyed off-white tone; avoid machine washing or machine drying to protect the structural cage bond and Boost pellet elasticity; loosen laces, remove insoles, and allow to air dry naturally at room temperature in a well-ventilated space away from direct sunlight and radiators.