Printed on THICK card stock! Not indestructible, but definitely not the flimsy paper stuff! No she-shed or man cave is complete without this 12"X18" Shadow of Jupiter poster, Licensed by the incredible Flyland Designs!!! Drop us a message if you want them signed, we'd be happy to oblige! Don't forget to buy one for you mom too!!! P.S. Shipping on these will be not so awesome as USPS has upped the shipping costs on shipping tubes! Come grab one at a show if we're in your neck of the woods!!!