Walton Enterprises Passive Snow Shield Cover made from Architectural polyester fabric protected by Kynar UV stable material. UV stable Gore-Tex thread is used on all stitching for longer life. Stainless steel rope with ratchet fasteners to secure Snow Shield Cover to antenna's reflector. Material - Polyester fabric coated in architectural Kynar (a rugged architectural material proven in outdoor structures since the 1940s)RF transparency similar to PTFE, for close to 65% lower cost