The keyword phrase "911 v2 new balance" functions grammatically as a proper noun. It operates as a single, specific name used to identify a particular product, in this case, a specific model of a shoe manufactured by the brand New Balance.
This determination is based on the components of the phrase. "New Balance" is the core proper noun, identifying the brand. The elements "911" (the model number) and "v2" (an abbreviation for "version 2") act as adjectival modifiers. They are not independent adjectives in a general sense but are integral parts of the product's official name. When combined, the entire string "911 v2 New Balance" forms a compound noun phrase that names a unique entity, which is the defining characteristic of a proper noun.
For the purpose of an article, treating this phrase as a noun is crucial. It will serve as the subject of sentences (e.g., "The 911 v2 New Balance features premium materials.") or the object of a verb or preposition (e.g., "The article reviews the 911 v2 New Balance."). This grammatical classification dictates how the term is used to construct clear, accurate sentences focused on the specific product as the main point.
