adidas Ultraboost 21 - White/Black - UK 12.5
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Product Information
Full details
The adidas Ultraboost 21 trainers are designed for adults seeking unparalleled comfort and performance in their footwear. Offering maximum energy return and superior cushioning, these trainers are ideal for both daily runs and casual wear. While they provide excellent support, they may require a break-in period for optimal comfort.
All features
| Age Group | adult |
|---|---|
| Colour | White |
| Gender | Unisex |
| Shoe Size UK | 12.5 |
| Accent Colour | Black |
| Shoe Type | Trainers |
| Series | Ultraboost 21 |
| Model Part Number | S23708-125 |
| Brand | adidas |
Extended Product Information
FAQs
Are the adidas Ultraboost 21 suitable for wide feet?
The Primeknit+ upper is adaptive and can accommodate a range of foot widths. However, individuals with significantly wide feet might find them snug initially. Consider trying them on or looking for wide-fit specific models if available.
How do I clean the white areas of the trainers?
Use a soft brush or cloth with a mild soap solution and cold water. Gently scrub the white areas, then wipe clean with a damp cloth. Avoid using abrasive cleaners or bleach.
Can I wear these for marathon running?
Yes, the Ultraboost 21 is designed with performance running in mind and offers excellent cushioning and energy return, making them suitable for marathon distances.
What is the main difference between Ultraboost 21 and previous models?
The Ultraboost 21 features an updated Continental™ Wintergrip™ rubber outsole for enhanced traction, an improved Torsion System for better stability, and a slightly more robust build for increased durability and energy return.
How long does the Boost cushioning typically last?
Boost cushioning is known for its durability. While it may gradually lose some responsiveness over many hundreds of miles, it generally maintains its cushioning properties for a significantly longer period than traditional EVA foams.
Are these trainers waterproof?
The Primeknit+ upper is breathable but not waterproof. They offer some resistance to light moisture but are not designed for heavy rain or submersion.
Troubleshooting
Shoes feel too tight or uncomfortable
The Primeknit+ upper may require a short break-in period. Wear them for short durations initially and gradually increase wear time. Ensure you have the correct size; a professional fitting can help.
Traction is reduced on wet surfaces
Ensure the Continental™ rubber outsole is clean from dirt and debris. While designed for grip, extreme wet conditions can still pose a slipping hazard. Dry the outsole gently if wet.
Primeknit+ upper shows signs of wear or pilling
Avoid contact with abrasive surfaces or sharp objects. If minor pilling occurs, it can sometimes be carefully trimmed with small scissors or a fabric shaver, but avoid cutting the knit itself.
Midsole feels less responsive over time
The Boost midsole is designed for long-term durability, but its responsiveness can be affected by extreme temperatures or prolonged exposure to dirt. Follow care instructions to maintain material integrity.
Pros and Cons
Pros
- Exceptional cushioning and energy return for a responsive feel.
- Breathable and adaptive Primeknit+ upper for a comfortable, secure fit.
- Durable Continental™ rubber outsole ensures reliable traction.
- Stylish 'Oreo' (White/Black) colorway suitable for athletic and casual use.
- Designed for both performance running and everyday wear.
Cons
- May require a brief break-in period for some users.
- Higher price point compared to basic running shoes.
- The white color can show dirt more easily with heavy use.
- While durable, the knit upper can be susceptible to snagging on sharp objects.
Setup, Compatibility & Care
Setup: The adidas Ultraboost 21 trainers require no specific setup. They are ready to wear out of the box.
Compatibility: These trainers are designed for adult unisex wear, suitable for a range of foot shapes due to the adaptive Primeknit+ upper. They are compatible with most athletic or casual clothing styles.
Care Instructions:
- Cleaning: For best results, use a soft brush or cloth with a mild soap and cold water to clean the upper and midsole. Avoid machine washing or harsh detergents, as this can damage the materials.
- Drying: Allow the shoes to air dry naturally at room temperature. Keep them away from direct heat sources like radiators or sunlight, which can warp the shape and materials.
- Outsole: Periodically check the Continental™ rubber outsole for any embedded debris and clean with a damp cloth.
- Storage: Store in a cool, dry place when not in use to maintain their shape and material integrity.