Some throwing lines produce more strays than others. This surround is built for those, ringing your dartboard with 8.2 square feet of foam so a wide miss still lands somewhere soft. The one-inch EVA foam is dense enough that darts stop in it rather than travel through, and the ring is light enough to lift into place single handed. Segments press together by hand, so the whole thing goes up in minutes with nothing to drill and no fresh holes in your plaster.