All of our underwear is made from one of the newest and most revolutionary fabrics known as Modal®. Modal fabric is a soft and luxurious fabric derived from sustainable plants that wicks moisture faster than any other natural fabric as well as having anti-microbial properties to reduce bacteria from your sweat and skin. We use Modal that has 10% Spandex® added to it to give you the support, stretch, and, comfort you want in your underwear. All of our underwear is made in the USA. You can thank us later!