Dzign Fiberglass Chopped Strand Mat is perfect for any size job, large or small. The fiberglass cloth is a versatile repair material for use on automobiles, boats, tubs, showers, sinks, pools, hot tubs and more. Fiberglass Chopped Strand Mat is a woven fabric that helps reinforce repairs with its high strength to weight ratio. Use this fiberglass cloth where resin alone would not provide sufficient strength. Fiberglass cloth offers numerous benefits, including a resistance to expansion or contraction as temperatures change. This Glass cloth is highly pliable, enabling it to conform to curved surfaces.