Evercoat Sea-Glass 1.5oz Fiberglass Mat Non-Woven The Evercoat Sea-Glass Fiberglass Mat is best used for bulk build up when repairing holes and badly damaged areas. This mat is 100 fiberglass in a non-woven state also molds and builds for repair of curved surfaces on fiberglass objects. Best for high build-up repairs Will conform to any shape 1.5 ounce weight Sizes Available 940 38 34 1 sq. yd. 941 38 x 102 3 sq. yds. California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov