The Nike Air Force 1s are made with high-quality leather, suede and other premium materials. Fake shoes often use cheaper materials that are noticeable upon close inspection:

Leather quality: The leather of authentic Air Force 1s is smooth, soft and durable. Faux leather can feel stiff, plastic-like, or even too shiny.

Suede: If the Air Force 1 has suede elements, the texture should be soft and velvety. Faux suede may appear rough, uneven, or lack the subtle pile of real suede.

Odor: Authentic Nike shoes have a specific, non-chemical odor. Fake shoes, especially those made from synthetic materials, can give off a strong, unpleasant odor.