Printful is one of the largest print-on-demand companies. Our product lineup includes custom t-shirts, hoodies, leggings, mugs, posters and other apparel and non-apparel items. We print a design of your choice on more than 170 different products. Our affiliate program allows the affiliates to earn 10% of every order your referred customer submits. We also offer a fulfillment service for online merchandise stores. This means that you can earn 10% of your referred customer’s store revenue.