| Model | adidas UltraBoost 20 |
| Known as | "Blue Boost" |
| Brand | |
| Release date | December 5, 2019 |
| Colorway | Core Black / Core Black / Boost Blue Violet Metallic |
| Colors | Black, Blue, Purple, Red |
| Retail price | $160 (€143, £121, ¥17,454) |
| Style code | EG4807 |
| Rating | |
| Type | Original, General Release |
| Gender | Grade School |
| Sport | Lifestyle |
This UltraBOOST 20 J features a stealthy Core Black Primeknit upper and lace cage, but its key feature is the Boost Blue Violet Metallic midsole. Unlike the traditional white BOOST foam, the midsole here is treated with a metallic blue-violet finish, giving the shoe a distinct "Blue Boost" glow. The black upper has subtle stitching details in a matching violet tone, a nod to the shoe's space-inspired collaboration with the ISS National Lab, where the model was developed with information about performance in space. The outsole is black Continental™ Rubber.
Added June 11, 2025 at 1:24:32 PM, Updated October 15, 2025 at 12:10:35 PM
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