Glasses are prisoner tracking glasses, bugs and infrared telescopes.

Sports shoes are shoes that strengthen the feet.

Generally speaking, Conan found the prisoner with tracking glasses, then anesthetized Kogoro with a watch-type anesthetic gun, and then solved the case with a bow voice changer. Sports shoes are used to catch criminals. His belt seems to have made a football, so he doesn't have to kick it with vegetables.

Suit shorts are just ordinary clothes.