Big Kids' adidas UltraBoost 21 J "Triple Black"
The Big Kids' adidas UltraBoost 21 J "Triple Black" (FY5390) released Thursday, January 28, 2021.
Original retail (2021): $160 · Lowest resale ask: $96 on Flight Club (Nov 14, 2026)
Colorway: Core Black/Core Black/Core Black · Style code: FY5390 · Release date: January 28, 2021 · Lowest resale ask: $96 · Availability: Available now
Source: GOAT's catalog · stores checked Nov 14, 2026, 4:22 PM ET
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