The LEGO Ninjago x adidas FortaRun X J ‘Kai’ is taken from an apparel and footwear collection designed in partnership with the Danish toy brand. Varying crimson hues are applied to the textile upper, embellished with tonal three-stripes and a unique flame graphic across the toe. Elastic laces and an adjustable hook-and-loop ankle strap combine to deliver a secure fit. Ninjago branding adorns a webbing pull tab at the heel, rendered in a contrasting black finish and good for easy on and off.
| Release Date | 03-04-2021 |
| SKU | FY6527 |
| Nickname | Kai |
| Colorway | Red/Rust Red/Corn Yellow |
| Main Color | Red |
| Upper Material | Textile |
| Technology | Cloudfoam |
| Category | Running |