Our Inflatable Boat Number Stencils are designed to temporarily adhere to your boat where you can paint in the color you are wanting for your inflatable boat.We offer several fonts to choose from. You can purchase your paint from your local Walmart. Rustoleum makes a good paint for this purpose in a spray can. Some use Krylon Paint. The lettering will be cut out of a reactangle made of self adhesive vinyl. The lettering you see in the designer will be removed from the rectangle strip. You will then paint the rectangle stencil and let the paint dry. Then remove the vinyl rectangle. Leaving behind your lettering. Generally US State Laws Require 3 Inch Lettering Height & 2 Inch Spaces Between The Numbers And Letters.