Top Notch 9 is a 100 percent solution-dyed polyester fabric with a fluorocarbon finish. At 9 ounces per square yard, it is more breathable than competitive solution-dyed polyester while maintaining abrasion resistance, colorfastness and water resistance. Top Notch 9 is lightweight and easily sewn. Applications include sailboat boom covers, marine tops and covers, awnings and canopies, where a strong, breathable, UV-resistant cover is needed.