An interest in leather clothing
Leather fetishism is the name popularly used to describe a sexual attraction to people wearing leather and or to the garments themselves. The smell and the sound of leather is often an erotic stimulus for people with a leather fetish. Leather uniforms may also become a fetish. Leather is occasionally finished with a glossy surface and produced in bright colors, providing visual stimuli for some leather fetishists.
These stories all contain references to leather.