Set includes 5 Sizes: 13-inch by 9-inch, 13-inch by 13-inch, 24-inch by 13-inch, 24-inch by 18-inch and 30-inch by 20-inch. This set is good for 1001 uses. Simply use your Protect it Mat whenever you need to protect a work surface. Use your flebyible boards for small, medium, and large projects such as Scrapbooking, Kids crafts, painting and puzzles. These can also be used as pet food mats, office desk blotters or mouse pads. There great for dads workbench. Don't forget they always come in handy in the kitchen, on the boat or in the RV.