They also gin the cotton, spin the yarn, knit the cloth and sew the shirts locally.
Washing is done with natural biodegradable soaps and softeners.
No formaldehyde is used. I don't mean they do it all in their kitchen - they've created a textile industry around them. Anyhow, the T-shirts are nice, 5.75oz. Natural creamy color and takes dyes very well. If you'd rather speak with a human, please call toll-free from anywhere in the U.S. or Canada 8am to 5pm California time.