Adidas Men’s Ultraboost 21 – Black/Orange
Ultimate Energy. All-Day Comfort.
Engineered for performance and designed to turn heads, the Adidas Ultraboost 21 in Black/Orange delivers maximum energy return, cushioned comfort, and bold street style. Perfect for serious runners and everyday athletes alike.
Why You’ll Love Ultraboost 21
- Boost Midsole: Incredible energy return with every step
- Primeknit+ Upper: Adaptive fit that hugs your foot for stability
- Linear Energy Push (LEP): Added torsion system for extra responsiveness
- Continental™ Rubber Outsole: Superior grip on all surfaces
From Road Runs to Urban Style
The Ultraboost 21 blends high-tech running innovation with modern design. Whether you’re chasing PBs or cruising the city, these shoes deliver performance, comfort, and standout style in every step.
Product Details
- Brand: Adidas
- Colour: Black with Orange accents
- Upper: Primeknit+ textile
- Midsole: Boost technology
- Outsole: Continental™ rubber
- Use: Running, walking, casual wear
✔ In stock now — run further, feel better, look sharper.
Adidas Shoe Size Chart
Get the perfect fit for your Adidas shoes with AdventureCo’s complete size chart. Compare men’s and women’s US, UK, EU sizes and foot length in centimeters (cm). Easy 365-day returns if it's not right.
Size Conversion Table
| US (Men) | US (Women) | CM | UK | EU |
|---|---|---|---|---|
| 4 | 5 | 22.1 | 3.5 | 36 |
| 4.5 | 5.5 | 22.5 | 4 | 36 2/3 |
| 5 | 6 | 22.9 | 4.5 | 37 1/3 |
| 5.5 | 6.5 | 23.3 | 5 | 38 |
| 6 | 7 | 23.8 | 5.5 | 38 2/3 |
| 15 | 16 | 31.8 | 14.5 | 50 2/3 |
How to Measure Your Foot
- Place your heel against a wall, mark the tip of your longest toe, and measure from the wall—in centimeters.
- Refer to the “CM” column to find your corresponding size.
- Measure at the end of the day when your feet are typically largest.
Sizing Tips & Return Policy
- Adidas sizes are generally true to fit, but can vary by model—some narrower or wider than others.
- For a snug fit, consider going down half a size; for a roomier fit, go up half a size.
- All unused items can be returned or exchanged within 365 days—no hassle, flexible returns policy.
Adidas Men’s Ultraboost 21 – Black/Orange
Ultimate Energy. All-Day Comfort.
Engineered for performance and designed to turn heads, the Adidas Ultraboost 21 in Black/Orange delivers maximum energy return, cushioned comfort, and bold street style. Perfect for serious runners and everyday athletes alike.
Why You’ll Love Ultraboost 21
- Boost Midsole: Incredible energy return with every step
- Primeknit+ Upper: Adaptive fit that hugs your foot for stability
- Linear Energy Push (LEP): Added torsion system for extra responsiveness
- Continental™ Rubber Outsole: Superior grip on all surfaces
From Road Runs to Urban Style
The Ultraboost 21 blends high-tech running innovation with modern design. Whether you’re chasing PBs or cruising the city, these shoes deliver performance, comfort, and standout style in every step.
Product Details
- Brand: Adidas
- Colour: Black with Orange accents
- Upper: Primeknit+ textile
- Midsole: Boost technology
- Outsole: Continental™ rubber
- Use: Running, walking, casual wear
✔ In stock now — run further, feel better, look sharper.
Adidas Shoe Size Chart
Get the perfect fit for your Adidas shoes with AdventureCo’s complete size chart. Compare men’s and women’s US, UK, EU sizes and foot length in centimeters (cm). Easy 365-day returns if it's not right.
Size Conversion Table
| US (Men) | US (Women) | CM | UK | EU |
|---|---|---|---|---|
| 4 | 5 | 22.1 | 3.5 | 36 |
| 4.5 | 5.5 | 22.5 | 4 | 36 2/3 |
| 5 | 6 | 22.9 | 4.5 | 37 1/3 |
| 5.5 | 6.5 | 23.3 | 5 | 38 |
| 6 | 7 | 23.8 | 5.5 | 38 2/3 |
| 15 | 16 | 31.8 | 14.5 | 50 2/3 |
How to Measure Your Foot
- Place your heel against a wall, mark the tip of your longest toe, and measure from the wall—in centimeters.
- Refer to the “CM” column to find your corresponding size.
- Measure at the end of the day when your feet are typically largest.
Sizing Tips & Return Policy
- Adidas sizes are generally true to fit, but can vary by model—some narrower or wider than others.
- For a snug fit, consider going down half a size; for a roomier fit, go up half a size.
- All unused items can be returned or exchanged within 365 days—no hassle, flexible returns policy.
10,000+ Reasons to Give Us a Try
At Adventureco, we stand behind every product we sell. That’s why you’re covered by our 365-Day Return Policy — with free returns within Australia.
Not the right fit? Changed your mind? No worries. Return your gear in unused condition within 365 days for a full refund or store credit — no fuss, no pressure.
Trusted for 9+ years and over 10,000 orders delivered. Shop with confidence, the adventure is guaranteed.
