Polyester Blend Imported SAFEGUARD YOUR WALL - Durable 1" thick EVA foam prevents your darts from damaging your wall with 8.2 square feet of coverage REVERSIBLE - Easily flipped from the front side with logos to the back side without logos to prolong the lifespan of the surround or to give a cleaner look; an attractive velveted surface helps to minimize signs of wear UNIVERSAL COMPATIBILITY - Works with both 18" and 17.75" sisal dart boards, simply use the included adhesive band to accommodate smaller dartboards PROTECTS YOUR DARTS - Catches your darts and protects them when playing on harder surfaces, like cement or brick QUICK SETUP - Simply snap the segments together and mount it around your dartboard to use. Compression fitting requires no additional bracing, mounting hardware or tools