Felipe and Harvey used to be good friends, but one day Harvey was found shot to death in Felipe's garden. Felipe was holding a gun when he was found—a gun registered in his own name. When tested for fingerprints, Felipe's matched a set found on the gun. Two sets of footprints were found in the garden soil. An autopsy confirmed Harvey died from a single gunshot wound and that he had several thin strands of fabric under his fingernail and traces of wine in his stomach. Which evidence would be considered an individual characteristic?

Felipe's fingerprints found on the gun
Footprints matching a size-10 men's boot
Wine in Harvey's kitchen matching his stomach contents
A popular windbreaker that matches the thin strands of fabric