What size would a boy that is 5 feet tall and 120 pounds wear?

A boy who is 5 feet tall and weighs 120 pounds would typically wear a size medium or large in boys' clothing, depending on the brand and fit. For shirts, he might wear a size 10-12 or 14-16, and for pants, he may fit size 10-12 or 14, depending on the waist measurement. It's important to consider that sizing can vary between different brands, so trying on clothes for the best fit is recommended.