Twenty-four side strips come with these twelve beige tiles, and that is the detail worth noticing first, because it is what turns a grid of puzzle pieces into a floor with a finished edge. Snapped onto the perimeter, the strips round off the border into a straight line that fits neatly against a wall instead of leaving exposed interlocking teeth around the outside. Inside that border, the twelve tiles combine into one large free activity area covering about 52 sq ft, each tile 25 in square at a 0.5-in thickness. The top face carries a raised surface pattern rather than being flat, and that texture protects against slipping and keeps footing sure when movement gets quick. Material is environment-friendly EVA, selected to be good for health rather than the sharp-smelling budget foam that keeps outgassing for weeks, and it is durable enough for years of use without deformation or fracture, holding its half-inch loft instead of compressing into permanent hollows underneath furniture or equipment. The foam also performs strongly at reducing noise, so activity above stays a peaceful matter for anyone in the room below. Taking the floor up again is straightforward: the interlocking design detaches easily and the tiles pile up flat for storage. Cleaning needs nothing more than a wet cloth, since the waterproof surface does not absorb spills. Beige keeps the layout light and neutral underfoot. The set weighs 8 lbs, and assembly is required.