The Yeezy Boost 350 V2 “MX Rock” is a December 2021 release of the casual lifestyle shoe by Kanye West in a design that features a marbled appearance. The “MX Rock” succeeds the “MX Oat” in bringing a new swirled style to the Yeezy Boost 350 V2, a departure from the traditional layered look of the shoe's original design. The woven Primeknit upper features swirls of brown and dark grey against a black base. Like many 350 V2s, a side monofilament stripe, this time in black, complements the colorway. Black laces appear on the top of the sock-like shoe. A black painted ribbed midsole housing YEEZY's Boost cushioning technology completes the design. Release date: December 30, 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 |
