All our imagery of Store is made by using plastisol inks that are screen printed directly onto your shirt. By using plastisol inks, each design is rendered with vibrant colors that can be printed on our cotton shirts without affecting the opacity of the ink. Plus, the designs last longer and look even better! That’s why we make sure to choose the best quality. Every design is printed on a Cotton shirt for comfort and softness. 5.3 oz 100% preshrunk cotton.