ECHO-LIT Grasping Grammar: They're/Their/There Laminated Educational Poster. Eco-friendly, Language Mechanics Art Print Our 18 x 24 inch poster is printed on heavy 100 pound cover stock paper. This durable paper won't wrinkle and crease like typical poster paper. Excellent visual teaching tool for classrooms and libraries. Poster copy: "They're hanging their jackets there." We SHIP ORDERS FAST (typically within 24 hours) in sturdy packaging to prevent bends and tears. We design all of our posters in house, producing only original, unique art prints for our customers.