The Yeezy Boost 380 “Alien” is the first colorway of the low-top design from Kanye West that uses design cues from the Yeezy Boost 350 V2 as a base for a new model. Continuing to lean heavily on the use of premium materials, the upper of the Yeezy Boost 380 “Alien” includes a sock-like cream-colored Primeknit motif with contrasting grey material woven into the fabric. A ventilated mid-panel allows for constant airflow through the shoe with a traditional lacing system integrated within the flexible knit upper. A chunky white-based Boost sole with bluish-green “Alien” detailing completes the avant-garde design. The Yeezy Boost 380 “Alien” released on November 15, 2019.
| 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 |
