All of our fabric is made from 100% USDA certified organic cotton from Texas. Most of our competitors make underwear from a blend of synthetic fibers produced overseas, but we like using natural fibers because they're breathable and don't keep us hooked on petroleum products. We also really like being able to support local supply chains and regenerative agriculture. We went to visit our cotton suppliers a few months back and you can read about our visit here.
But cotton, even organic cotton, isn't a perfect crop. It still requires a lot of water and energy to produce and relies on migrant labor. So we are always on the hunt for new and better fabric. We also use standard elastics for the waistband and other trim. As far as we know, there aren't any other good alternatives on the market yet. Draw string undies, anyone?!