It seems like "Ntthhike Air matthhx 90 United In Victory" could be a special edition or a customized version of the Ntthhike Air matthhx 90 line. While I couldn't find a specific reference to this model, the name suggests a theme of unity and triumph, which might be reflected in the design or messaging of the shoe. If you have more details or context about this particular model, I'd be happy to help further!