Offered at half the price of domestic equivalent products. Made specifically for asphalt plywood sheet applications with no extra grommets. In addition, for cheap reasons, the object will be connected in a certain direction as the attached picture shows. The joints are heat melt crimp that is highly waterproof, not sewn. This is not a problem for the purpose of plywood sheets. Use as a double seat overlay. For hanging directly into asphalt plywood, please use separate hemp sheets. In addition, this product does not have a fully waterproof function. Temporarily water repellent. It does not have a waterproof function to prevent the material from getting wet on rainy days.