The Yeezy Foam Runner “MX Sand Grey” is a December 2021 colorway of the hybrid slip-on sandal and sneaker by Kanye West that combines earth toned hues. Designed in the spirit of West’s other popular Yeezy Foam Runner styles like the “Cream” from August 2021, the “MX Sand Grey” features a marbled blend of sand and grey on its EVA foam and harvested algae upper. The various perforations found across the upper provide constant airflow to the wearer’s foot. Release date: December 11, 2021
| US size | UK sizes | Insole Length(MM) |
| 3.5 | 3 | 215 |
| 4 | 3.5 | 220 |
| 4.5 | 4 | 225 |
| 5 | 4.5 | 230 |
| 5.5 | 5 | 235 |
| 6 | 5.5 | 235 |
| 6.5 | 6 | 240 |
| 7 | 6.5 | 245 |
| 7.5 | 7 | 250 |
| 8 | 7.5 | 255 |
| 8.5 | 8 | 260 |
| 9 | 8.5 | 265 |
| 9.5 | 9 | 265 |
| 10 | 9.5 | 270 |
| 10.5 | 10 | 275 |
| 11 | 10.5 | 280 |
| 11.5 | 11 | 285 |
| 12 | 11.5 | 290 |
| 12.5 | 12 | 290 |
| 13 | 12.5 | 295 |
| 13.5 | 13 | 300 |
| 14 | 13.5 | 305 |
| 14.5 | 14 | 310 |
| 15 | 14.5 | 315 |
| 15.5 | 15 | 320 |
| 17 | 16 | 325 |
