DURABLE AND LIGHTWEIGHT – Made from sturdy stock, the same as corrugated project boards, ensuring a strong and lightweight design. SECURE ATTACHMENT – Slotted headers attach easily and securely to project boards, providing prominent display space. VERSATILE SURFACES – Matte-finished, colored surfaces easily accept markers, crayons, paints, and adhesives. DUAL-COLOR DESIGN – Each header features two colors, adding visual interest and flexibility to your display. ECO-FRIENDLY – 100% recyclable headers, measuring 10" x 36", are perfect for enhancing your presentations while being environmentally conscious.