The Tommy John 360 Sport 6 Inch Pouch Boxer Brief - 2 Pack 1003349 has mesh knit fabric at front, back, and between legs for more airflow, along with 4-way stretch performance fabric that wicks with a specially designed pouch interior that separates your package from everything else. Tommy John's 360 Sport 6 Inch Pouch Boxer Brief - 2 Pack is made of polyester/spandex.