Heartstopper Posters and Art Prints Where can I find other heartstopper designs? Expand or collapse section. In addition to heartstopper designs, you can explore the marketplace for pride, rainbow, and bisexual designs sold by independent artists. What material is this item made of? Expand or collapse section. Gallery quality, 100% cotton rag. Ultrachrome archival inks for rich, long-lasting color. Trimmed for framing with a 1 inch border. Learn More » What USA ship methods are available?…