Sports bras can't replace swimsuits, because the materials, functions, applicable scenes and so on are different. The sports bra is made of cotton and linen, and the swimsuit is made of nylon. Sports bras are suitable for running and fitness, while swimsuits are only suitable for swimming. Functionally speaking, swimsuits are more single, while sports bras have more comprehensive functions, so sports bras and swimsuits cannot be mixed.