This may be the nicest feeling sweatshirt you'll ever put on! They're made of a new soft material that has two different fabric sides. The outside of the sweatshirts are polyester and the insides are a soft cotton making it possible to use the dye-sublimation imprinting method to print your design onto your shirt. This process actually dyes the inks right into the fabric itself, giving your design a soft, natural feel on a quality heavyweight garment. All of our shirts have quality stitching & great washibility. You can't feel the design on the outside and it feels great against your skin on the inside. We know you'll love them!