adidas UltraBoost 4.0 "Grey Four"
The adidas UltraBoost 4.0 "Grey Four" (CP9251) released in February 2018.
Original retail (2018): $180 · Lowest resale ask: $249 on GOAT (Nov 14, 2026)
Colorway: Grey Four/Grey Four · Style code: CP9251 · Release date: February 2018 · Lowest resale ask: $249 · Availability: Available now
Source: GOAT's catalog · stores checked Nov 14, 2026, 4:21 PM ET
More colorways & related: adidas UltraBoost 4.0 "Legend Marine" · adidas UltraBoost 4.0 "Black Multicolor" · adidas UltraBoost 4.0 "Triple White" · adidas Wmns UltraBoost 4.0 "Triple Black Gold" · Parley x adidas Wmns UltraBoost 4.0 "Core Black" · adidas Wmns UltraBoost 4.0 "Black Orchid" · Game Of Thrones x adidas UltraBoost 4.0 "Night's Watch" · Game Of Thrones x adidas Wmns UltraBoost 4.0 "House Targaryen" · A Bathing Ape x adidas UltraBoost 4.0 "Green Camo" · adidas UltraBoost 4.0 "Black White Speckle" · Ren Zhe x adidas UltraBoost 4.0 "Chinese New Year" · Madness x adidas UltraBoost 4.0 "White"