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AI styling preview. Colors and details may differ from the original product photos.
adidas UltraBoost 21 'Carbon Solar Red'
adidas · Style FY3952
· Released 2021-06-11
from $201.95
Select a size:
Size chart — adidas
Use the chart below to convert between US, UK, EU and JP sizes.
Men
| US | UK | EU | JP (cm) |
|---|---|---|---|
| 4 | 3.5 | 36 | 22.1 |
| 4.5 | 4 | 36 2/3 | 22.5 |
| 5 | 4.5 | 37 1/3 | 22.9 |
| 5.5 | 5 | 38 | 23.3 |
| 6 | 5.5 | 38 2/3 | 23.8 |
| 6.5 | 6 | 39 1/3 | 24.2 |
| 7 | 6.5 | 40 | 24.6 |
| 7.5 | 7 | 40 2/3 | 25.0 |
| 8 | 7.5 | 41 1/3 | 25.5 |
| 8.5 | 8 | 42 | 25.9 |
| 9 | 8.5 | 42 2/3 | 26.3 |
| 9.5 | 9 | 43 1/3 | 26.7 |
| 10 | 9.5 | 44 | 27.1 |
| 10.5 | 10 | 44 2/3 | 27.6 |
| 11 | 10.5 | 45 1/3 | 28.0 |
| 11.5 | 11 | 46 | 28.4 |
| 12 | 11.5 | 46 2/3 | 28.8 |
| 12.5 | 12 | 47 1/3 | 29.3 |
| 13 | 12.5 | 48 | 29.7 |
| 13.5 | 13 | 48 2/3 | 30.1 |
| 14 | 13.5 | 49 1/3 | 30.5 |
| 14.5 | 14 | 50 | 31.0 |
| 15 | 14.5 | 50 2/3 | 31.4 |
| 16 | 15 | 51 1/3 | 31.8 |
| 17 | 16 | 52 2/3 | 32.6 |
| 18 | 17 | 53 1/3 | 33.5 |
| 19 | 18 | 54 2/3 | 34.3 |
| 20 | 19 | 55 2/3 | 35.2 |
Women
| US | UK | EU | JP (cm) |
|---|---|---|---|
| 5 | 3.5 | 36 | 22.1 |
| 5.5 | 4 | 36 2/3 | 22.5 |
| 6 | 4.5 | 37 1/3 | 22.9 |
| 6.5 | 5 | 38 | 23.3 |
| 7 | 5.5 | 38 2/3 | 23.8 |
| 7.5 | 6 | 39 1/3 | 24.2 |
| 8 | 6.5 | 40 | 24.6 |
| 8.5 | 7 | 40 2/3 | 25.0 |
| 9 | 7.5 | 41 1/3 | 25.5 |
| 9.5 | 8 | 42 | 25.9 |
| 10 | 8.5 | 42 2/3 | 26.3 |
| 10.5 | 9 | 43 1/3 | 26.7 |
| 11 | 9.5 | 44 | 27.1 |
| 11.5 | 10 | 44 2/3 | 27.6 |
| 12 | 10.5 | 45 1/3 | 28.0 |
| 12.5 | 11 | 46 | 28.4 |
| 13 | 11.5 | 46 2/3 | 28.8 |
| 13.5 | 12 | 47 1/3 | 29.3 |
| 14 | 12.5 | 48 | 29.7 |
| 14.5 | 13 | 48 2/3 | 30.1 |
| 15 | 13.5 | 49 1/3 | 30.5 |
| 15.5 | 14 | 50 | 31.0 |
Kids
| US | UK | EU | JP (cm) |
|---|---|---|---|
| 1k | 0k | 16 | 8.1 |
| 2k | 1k | 17 | 9.0 |
| 3k | 2k | 18 | 9.8 |
| 4k | 3k | 19 | 10.6 |
| 5k | 4k | 20 | 11.5 |
| 5.5k | 5k | 21 | 12.3 |
| 6k | 5.5k | 22 | 12.8 |
| 6.5k | 6k | 23 | 13.2 |
| 7k | 6.5k | 23.5 | 13.6 |
| 7.5k | 7k | 24 | 14.0 |
| 8k | 7.5k | 25 | 14.5 |
| 8.5k | 8k | 25.5 | 14.9 |
| 9k | 8.5k | 26 | 15.3 |
| 9.5k | 9k | 26.5 | 15.7 |
| 10k | 9.5k | 27 | 16.1 |
| 10.5k | 10k | 28 | 16.6 |
| 11k | 10.5k | 28.5 | 17.0 |
| 11.5k | 11k | 29 | 17.4 |
| 12k | 11.5k | 30 | 17.8 |
| 12.5k | 12k | 30.5 | 18.3 |
| 13k | 12.5k | 31 | 18.7 |
| 13.5k | 13k | 31.5 | 19.1 |
| 1 | 13.5k | 32 | 19.5 |
| 1.5 | 1 | 33 | 20.0 |
| 2 | 1.5 | 33.5 | 20.4 |
| 2.5 | 2 | 34 | 20.8 |
| 3 | 2.5 | 35 | 21.2 |
| 3.5 | 3 | 35.5 | 21.6 |
| 4 | 3.5 | 36 | 22.1 |
| 4.5 | 4 | 36 2/3 | 22.5 |
| 5 | 4.5 | 37 1/3 | 22.9 |
| 5.5 | 5 | 38 | 23.3 |
| 6 | 5.5 | 38 2/3 | 23.8 |
| 6.5 | 6 | 39 1/3 | 24.2 |
| 7 | 6.5 | 40 | 24.6 |
| 7.5 | 7 | 40 2/3 | 25.0 |
Size sold out? Notify me
Size, price & UPC details
| Size | Price | UPC | Delivery |
|---|---|---|---|
| US M 7 / W 8 | — | 191985519042 | Out of stock |
| US M 7.5 / W 8.5 | — | 191985518977 | Out of stock |
| US M 8 / W 9 | $201.95 | 191985518946 | 3-4 business days |
| US M 8.5 / W 9.5 | — | 191985518953 | Out of stock |
| US M 9 / W 10 | — | 191985519035 | Out of stock |
| US M 9.5 / W 10.5 | — | 191985519011 | Out of stock |
| US M 10 / W 11 | — | 191985518922 | Out of stock |
| US M 10.5 / W 11.5 | — | 194830833027 | Out of stock |
| US M 11 / W 12 | — | 191985518939 | Out of stock |
| US M 11.5 / W 12.5 | — | 191985519059 | Out of stock |
| US M 12 / W 13 | — | 191985518915 | Out of stock |
| US M 12.5 / W 13.5 | — | 191985518908 | Out of stock |
| US M 13 / W 14 | — | 191985518991 | Out of stock |
| US M 14 / W 15 | — | 191985518878 | Out of stock |
About the adidas UltraBoost 21 'Carbon Solar Red'
The adidas UltraBoost 21 ‘Carbon Solar Red’ spotlights the running shoe’s full-length Boost midsole with a metallic gunmetal finish. Underfoot, the Continental rubber outsole is equipped with adidas’ updated Torsion system, dubbed Linear Energy Push. The black and Carbon Primeknit upper, made in part with recycled Parley Ocean Plastic, hugs the foot in a sock-like fit. Lightweight support is provided by a smoky midfoot cage and a silver translucent heel counter. An adidas-branded tongue tag in Solar Red delivers an unexpected pop of color.
| Silhouette | UltraBoost 21 |
|---|---|
| Colorway | Carbon/Carbon/Solar Red |
| Material | Primeknit |
| Season | 2021 |
| Release Date | 2021-06-11 |
What buyers say about us
Selected customer feedback. Feedback about our store and the buying experience, from sold.supply, eBay and Trustpilot. The source and purchase verification are shown on each card. These are not product ratings.
Smooth and easy transaction
Smooth and easy transaction! Fast Delivery! Shoes are great!Purchased item
Reebok Nano X5 'Espresso'
Great product
Great product, accurate description. Price was a bit higher than normal, but this shoe was a very hard find. The only other site I found had then for 595, so 340 was a dealLa entrega fue muy rapida y la atención…
La entrega fue muy rapida y la atención para la devolución también.
Gracias.Easy experience
Easy experience. My wife loves her sneakers!Purchased item
adidas SL72 RS 'Collegiate Orange Bright Blue'
No hassle and shoes look just as good as photos
Ordered with no hassle and the checkout was quick. The shoes look just as good as the photos, fit true to size, and feel comfortable right out of the box. I'd happily order from here again.Purchased item
On Running Cloudvista 3 'Ivory Wash'
They had many colors in the shoe I…
They had many colors in the shoe I wanted plus best price on the whitaker rejuven8s. The communication was great and shoes shipped quickly. I bought all 3 colors, they look better in person!!