winning artists get paid for their work, then 31-year-old co- founder jake nickell mass merchandizes the designs. >> we started with t-shirts, and we've expanded quite a bit. we do iphone cases, water bottles, backpacks, dresses-- tons and tons of stuff, and we're exploring more. >> reporter: threadless estimates it has a global audience of nearly two million people, so recently it decided to tap that community for a greater good. the company is now partnering with charities through a new unit called atrium. it's currently printing tee shirts benefiting a breast cancer awareness group called men for women now. the charity will get a quarter of the profits made from sales of the $20 shirts. >> right now we're printing about 850, and we always sell out our first batch. and depending on the velocity of those sales, we chase into it and print more. and we regularly do reprints of products that sell well. >> reporter: the idea to sell cause-based t-shirts came to nickell after hurricane katrina. the company designed a t-shirt to benefit hurricane victims and ended up raising over $100,000

winning artists get paid for their work, then 31-year-old co- founder jake nickell mass merchandizes the designs. >> we started with t-shirts, and we've expanded quite a bit. we do iphone cases, water bottles, backpacks, dresses-- tons and tons of stuff, and we're exploring more. >> reporter: threadless estimates it has a global audience of nearly two million people, so recently it decided to tap that community for a greater good. the company is now partnering with charities through a new unit called atrium. it's currently printing tee shirts benefiting a breast cancer awareness group called men for women now. the charity will get a quarter of the profits made from sales of the $20 shirts. >> right now we're printing about 850, and we always sell out our first batch. and depending on the velocity of those sales, we chase into it and print more. and we regularly do reprints of products that sell well. >> reporter: the idea to sell cause-based t-shirts came to nickell after hurricane katrina. the company designed a t-shirt to benefit hurricane victims and ended up raising over $100,000

winning artists get paid for their work, then 31-year-old co- founder jake nickell mass merchandizes the designs. >> we started with t-shirts, and we've expanded quite a bit. we do iphone cases, water bottles, backpacks, dresses-- tons and tons of stuff, and we're exploring more. >> reporter: threadless estimates it has a global audience of nearly two million people, so recently it decided to tap that community for a greater good. the company is now partnering with charities through a new unit called atrium. it's currently printing tee shirts benefiting a breast cancer awareness group called men for women now. the charity will get a quarter of the profits made from sales of the $20 shirts. >> right now we're printing about 850, and we always sell out our first batch. and depending on the velocity of those sales, we chase into it and print more. and we regularly do reprints of products that sell well. >> reporter: the idea to sell cause-based t-shirts came to nickell after hurricane katrina. the company designed a t-shirt to benefit hurricane victims and ended up raising over $100,000