adidas UltraBoost 4.0 - Black - 4
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Product Information
Full details
The adidas UltraBoost 4.0 is designed for adult athletes and casual wearers seeking a balance of high-performance energy return and everyday comfort. Its signature Primeknit upper and responsive cushioning make it an excellent choice for long walks, gym sessions, or daily commutes. While it offers premium comfort, users should note that the sock-like fit may feel restrictive for those with exceptionally wide feet, requiring a possible break-in period.
All features
| Age Group | adult |
|---|---|
| Colour | Black |
| Gender | Male |
| Shoe Size UK | 4 |
| Series | UltraBoost |
| Model Part Number | F36641 |
| Brand | adidas |
Extended Product Information
FAQs
Is the UltraBoost 4.0 true to size?
Most users find it true to size, but the snug Primeknit upper means those who prefer extra toe room or have wider feet may want to consider sizing up by half.
Can I use these for marathon running?
The UltraBoost 4.0 is highly capable for long-distance running, though marathon performance depends heavily on individual gait and arch support needs.
How do I maintain the Triple Black color?
Keep them clean with a soft brush and avoid exposing them to harsh chemicals. If they fade, professional-grade fabric dye or specialized sneaker restorer products can be used.
Are these shoes machine washable?
It is not recommended to machine wash these shoes. Hand cleaning with mild soap and water is the safest way to ensure the longevity of the adhesive and cushioning materials.
Does the Boost midsole flatten over time?
Boost technology is known for its durability and resistance to compression set, meaning it will retain its springy feel much longer than standard EVA foams.
Troubleshooting
Foot feels too tight or restricted
Try adjusting the lacing pattern to be looser across the midfoot or allow the Primeknit fibers to naturally stretch over 2-3 wears.
Outsole collecting small pebbles in the tread
Use a small tool or brush to clear out debris after trail use to maintain optimal traction.
Pros and Cons
Pros
- Exceptional energy return via the Boost midsole
- Breathable and adaptive Primeknit upper
- Excellent grip on various surfaces thanks to Continental rubber
- Versatile all-black colorway
Cons
- Sock-like construction can be tight for wide feet
- Lighter materials may require more frequent cleaning to maintain the deep black look
- Arch support may not be sufficient for those with severe overpronation
Setup, Compatibility & Care
Because the UltraBoost 4.0 utilizes a Primeknit construction, it is best to slip the shoes on rather than forcing them to preserve the tension in the heel collar. For cleaning, remove surface dirt with a soft brush. Use a mild detergent mixed with cold water to spot clean the Primeknit, but avoid submerging the shoes in a washing machine, as high heat or aggressive agitation can damage the foam midsole and the fabric structure. Air dry away from direct sunlight to prevent discoloration.