These Silver Tarps are:
Heavy duty, fiber reinforced polyethylene tarps that are twice as thick and twice as heavy as the blue tarps.
They are triple coated for durability.
They have an Ultra Violet reflector in the material so the sun won’t deteriorate the fabric.
They have rust resistant brass grommets every three feet apart and on all four corners.
They also have an EPDM collar on each corner for added strength.