Coverking has comprised Triguard out of three layers and each layer is treated with UV retardant to ensure your Corvette is protected against the sun's rays. The middle layer of polypropylene goes through a meltblown procedure, which means that it isheated and rolled so that it is water-resistant. The middle layer is then inserted between two layers of spunbound fabric, which means it is compressed in a way to allow breathability, in return preventing mildew and rot build up. Triguard's material is easy to clean, store, and is lightweight.