Clipboards hold paper and provide a flat, sturdy writing surface. They are available in a variety of sizes and configurations to accommodate different types of writing paper. Letter-size clipboards have dimensions slightly larger than 8-1/2 x 11 inches, while legal-size clipboards are slightly larger than 8-1/2 x 14 inches. Hardboard, plastic and polypropylene writing surfaces are ideal for their light weight and sturdiness. A spring clip keeps papers together on the clipboard.