Mizuno's Spark 4 is an entry-level running sneaker specifically design to complement training and long-distance activity. Arrived in October 2019, this option expresses a grey scheme across the technical mesh upper, synthetic overlays and lacing. The signature Runbird is seen across the sides. This update tools a white midsole with cushioning Wave technology and a high-abrasion carbon rubber outsole.
| Release Date | 10-17-2019 |
| SKU | K1GA190340 |
| Nickname | Grey |
| Colorway | Grey/Orange/White |
| Main Color | Grey |
| Upper Material | Mesh |
| Category | Running |