European Size 58 typically refers to clothing sizes, particularly for men's suits and jackets. In this sizing system, the number indicates the chest measurement in centimeters. Therefore, a Size 58 is designed for individuals with a chest circumference of approximately 58 centimeters, which is roughly equivalent to a U.S. size 48. This size is part of a broader European sizing scale that includes various sizes for different body types. It is important to note that sizing can vary between brands, so trying on clothing or checking specific brand size charts is recommended for the best fit.