adidas Ultraboost 21 - White/Black - UK 8

The adidas UltraBoost 21 'Oreo' trainers in a striking white and black colourway, model number S23...

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The adidas Ultraboost 21 'Oreo' trainers are designed for adults seeking a blend of performance and style for training and daily wear. Their key benefit lies in exceptional comfort and energy return, though some users may find the fit slightly snug. These unisex trainers feature a distinctive white and black colourway, the popular Ultraboost 21 series, and are built for versatile use.

All features

Age Groupadult
ColourWhite
GenderUnisex
Shoe Size UK8
Accent ColourBlack
Shoe TypeTrainers
SeriesUltraboost 21
Model Part NumberS23708-80
Brandadidas

Extended Product Information

FAQs

Are these trainers suitable for marathon running?

Yes, the Ultraboost 21 series is renowned for its excellent cushioning and energy return, making it a popular choice for marathon runners. However, individual comfort and performance can vary.

How do I know if I have the right size?

The trainers are designed for a snug, sock-like fit. Ensure the heel counter cups your heel comfortably and there is enough room in the toe box without excessive space. Refer to adidas' official sizing chart for precise measurements.

Can I wash these in a washing machine?

It is not recommended to machine wash these trainers. Hand washing with mild soap and water is the safest method to preserve the materials and structure.

What is the main difference between Ultraboost 21 and other models?

The Ultraboost 21 typically features a more substantial Boost midsole for enhanced cushioning and energy return compared to some earlier models, along with specific upper and outsole optimizations.

Do these trainers come in other colours?

The Ultraboost 21 series is available in a wide range of colourways. This specific model is the 'Oreo' variant (white/black), but other options may exist within the series.

How durable is the outsole?

The outsole is made from Continental™ Rubber, which is known for its exceptional durability and grip, offering long-lasting performance in various conditions.

Troubleshooting

Fit feels too tight

Ensure laces are loosened before putting on. If still tight, consider trying a half-size larger or exploring wider-fit alternatives if available.

Slipping during activity

Check that laces are tied securely. Ensure the outsole is clean and free from debris. The Continental™ rubber provides excellent grip, but heavy mud or slick surfaces can still reduce traction.

Reduced cushioning feel over time

While Boost cushioning is durable, its initial responsiveness may slightly decrease with extensive use. Regular cleaning can help maintain the materials.

Discoloration of white areas

Clean regularly with mild soap and water as described in the care instructions. Avoid contact with dark or dyed materials that could transfer colour.

Pros and Cons

Pros

  • Exceptional comfort and cushioning for extended wear.
  • Responsive energy return that aids performance.
  • Durable Continental™ rubber outsole for reliable grip.
  • Breathable Primeknit upper for a comfortable foot environment.
  • Stylish 'Oreo' colourway suitable for training and casual use.

Cons

  • May feel snug for wider feet.
  • Laces might require frequent adjustment for optimal fit.
  • Primarily designed for running and training, may not suit all formal occasions.

Setup, Compatibility & Care

Setup: The adidas Ultraboost 21 trainers require no specific setup. Simply lace them up to your preferred tightness.

Compatibility: These trainers are designed for unisex adult use and are compatible with standard sock sizes. They are suitable for a variety of athletic activities and casual wear.

Care:

  1. Cleaning: Use a soft brush or cloth to remove loose dirt. For deeper cleaning, a mild soap and cool water solution can be applied with a cloth, then wiped clean with a damp cloth. Avoid harsh detergents or abrasive cleaners.
  2. Drying: Allow trainers to air dry naturally at room temperature. Do not place them near direct heat sources (e.g., radiators, direct sunlight) as this can damage the materials.
  3. Storage: Store in a cool, dry place, away from direct sunlight when not in use. It is recommended to store them in their original box or a breathable shoe bag.