What is a size 31 waist?

A size 31 waist typically refers to the measurement around the waist circumference of a person, specifically 31 inches. This size is commonly used in men's and women's clothing, particularly for pants and jeans. It indicates that the garment is designed to fit someone with a waist measurement of approximately 31 inches. Sizes may vary between brands, so it's always best to check specific sizing charts for accurate fitting.