ULTRABOOST 21 SHOES STEP UP YOUR RUNS IN THESE ULTRABOOST 21 SHOES. Prototype after prototype. Innovation after innovation. Testing after... Read more
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SKU: 9D2NX7-O0ZD-88
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Footwear · US · UK · EU · JP · foot length
| US – Men | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 16 | 17 | 18 | 19 | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US – Women | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 15.5 | — | — | — | — | — | — |
| UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 16 | 17 | 18 | 19 |
| EU | 36 | 36⅔ | 37⅓ | 38 | 38⅔ | 39⅓ | 40 | 40⅔ | 41⅓ | 42 | 42⅔ | 43⅓ | 44 | 44⅔ | 45⅓ | 46 | 46⅔ | 47⅓ | 48 | 48⅔ | 49⅓ | 50 | 50⅔ | 51⅓ | 52⅔ | 53⅓ | 54⅔ | 55⅔ |
| JP (mm) | 220 | 225 | 230 | 235 | 240 | 245 | 250 | 255 | 260 | 265 | 270 | 275 | 280 | 285 | 290 | 295 | 300 | 305 | 310 | 315 | 320 | 325 | — | — | — | — | — | — |
| Foot length (cm) | 22.1 | 22.5 | 22.9 | 23.3 | 23.8 | 24.2 | 24.6 | 25.0 | 25.5 | 25.9 | 26.3 | 26.7 | 27.1 | 27.6 | 28.0 | 28.4 | 28.8 | 29.3 | 29.7 | 30.1 | 30.5 | 31.0 | 31.4 | 31.8 | 32.6 | 33.5 | 34.3 | 35.2 |
| Foot length (in) | 8.7 | 8.9 | 9.0 | 9.2 | 9.4 | 9.5 | 9.7 | 9.8 | 10.0 | 10.2 | 10.4 | 10.5 | 10.7 | 10.9 | 11.0 | 11.2 | 11.3 | 11.5 | 11.7 | 11.9 | 12.0 | 12.2 | 12.4 | 12.7 | 13.0 | 13.3 | 13.7 | 14.0 |
adidas uses one unified footwear chart: for the same length, the women’s US size is one number above the men’s. EU sizes use adidas’s fractional system. If you are between sizes, size down for a tight fit or up for a loose fit.
