Moisture-Wicking Fabrics: Fabrics that have moisture-wicking properties are excellent for sports bras. These fabrics pull sweat away from the skin to the surface of the fabric, where it can evaporate, keeping the wearer dry and comfortable. Common moisture-wicking materials include polyester blends and specialized synthetic blends.

Nylon: Nylon is known for its durability, moisture-wicking ability, and elasticity. It provides good support and a smooth skin sensation. It is often used in combination with other materials to enhance its performance.

Spandex or elastic fiber: Spandex, also known as elastic fiber, is crucial for providing elasticity and maintaining shape. It is usually mixed with other fabrics to make sports bras comfortable and supportive.

Polyester fiber: Polyester fiber is widely used in sportswear due to its moisture absorption and sweat-wicking ability and durability. It is usually used in combination with other fabrics to strike a balance between comfort and performance.

Mesh: Mesh panels or inserts made of breathable synthetic materials can enhance ventilation in critical areas, promote airflow, and help regulate body temperature during physical activity.

Cotton Blends: While cotton is comfortable, it may not be the best choice for intense workouts as it tends to retain moisture rather than wick it away. However, some sports bras use cotton blends that incorporate other fabrics like spandex to add stretch and support.