adidas UltraBoost - White - 4
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Product Information
Full details
The adidas UltraBoost 21 Tokyo is designed for adult runners who prioritize long-distance comfort and sustained energy return, making it an excellent choice for daily training. Its standout feature is the responsive, full-length Boost midsole that provides a plush yet supportive ride during high-mileage efforts. However, potential users should note that the specialized fit is best suited for those who prefer a snug, secure lockdown, which may feel restrictive for runners who prefer extra room in the midfoot area.
All features
| Age Group | adult |
|---|---|
| Colour | White |
| Gender | Male |
| Shoe Size UK | 4 |
| Series | UltraBoost |
| Model Part Number | S23863-45 |
| Brand | adidas |
Extended Product Information
FAQs
Are these shoes suitable for wide feet?
The UltraBoost 21 features a snug, supportive fit. Runners with wider feet may find the upper restrictive and might consider sizing up or trying them on to ensure a comfortable fit.
How do I clean my UltraBoost shoes?
Use a soft brush to remove loose dirt and a damp cloth with mild soap for spots. Avoid machine washing or using a dryer.
Can I use these for gym workouts?
While primarily designed for running, the stable base makes them suitable for light gym use, though they are optimized for forward motion.
Is the material waterproof?
The upper is designed for breathability and is not waterproof. It is best used in dry to moderately humid conditions.
How often should I replace these running shoes?
Generally, running shoes should be replaced every 300 to 500 miles, depending on your running surface and individual gait.
Does the Tokyo edition have special features?
The Tokyo edition includes specific styling and branding details related to the series while maintaining the core performance technology of the UltraBoost 21.
Troubleshooting
Feeling pressure on the top of the foot
Try a different lacing technique, such as the window lacing method, to alleviate pressure over the bridge of the foot.
Midsole feeling stiff initially
The Boost foam is designed to adapt to your foot strike; ensure you complete a few short runs to allow the materials to flex and break in properly.
Outer sole traction concerns in rain
Ensure the outsoles are free from debris or mud to maintain maximum contact surface with the ground.
Pros and Cons
Pros
- Exceptional energy return from the Boost midsole
- Highly supportive and snug fit
- Durable construction suitable for high-mileage training
- Stylish design consistent with the premium UltraBoost series
Cons
- Snug fit may feel tight for runners with wider feet
- Limited to specific size ranges
- Requires a break-in period for maximum comfort
Setup, Compatibility & Care
To ensure the best performance, verify your UK size against the standard fit of the UltraBoost 21, as the snug upper may require a adjustment in lacing tension. For routine care, remove surface dirt after each run using a soft-bristled brush. If the shoes become heavily soiled, hand wash them with lukewarm water and a mild detergent; avoid soaking the shoes or using a washing machine, as high-heat drying and agitation can compromise the adhesive bonds and the integrity of the Boost foam. Always air dry the shoes in a shaded, well-ventilated area away from direct sunlight or heat sources like radiators.