A great way to protect your tables and countertops is with these 4-piece map coasters of places we love, which come together to make an eye-catching decorative piece that can adorn any table. Aside from being a beautiful conversation starter, each set of matte-finished coasters is highly absorbent and features cork backing to protect surfaces against spills and stains. Features and Care * Sold as a set of 4 * Cork-backed to protect surfaces and prevent slipping * Highly absorbent * 4” x 4” x .31” * Ceramic * Wipe clean (not dishwasher safe) The United States has 58 national parks that cover 84.6 million acres, which is 3.4% of the country. The largest national park is Wrangell-St. Elias National Park & Preserve in Alaska, covering 13.2 million acres. The smallest is Hot Springs in Arkansas, covering 5,500 acres.