3 In 1 Design is a family-owned-and-operated custom print shop in San Diego, California. We specialize in creating quality, screen-printed designs. Our in-house artist can create a special design based on your concept, or we can bring your own design to life if you've already got something made. We can print custom graphics on t-shirts, sweatshirts, school apparel, business cards, mugs, and much more. You tell us what you want, and we will make it happen! Call today!