"Leather boots" in the context of a porn video tag refers to a specific type of footwear worn by one or both participants in the adult content. These boots are typically made from leather material, which can be associated with dominance and kinkier scenes due to its prevalence in BDSM culture. The tag implies that the scene features individuals wearing these boots, often paired with other fetish attire, and may involve activities such as foot worship or bondage-related scenes where the person wearing the boots is exercising control over a submissive partner.