Material - Shade sails made of high-density polyester. They are lightweight and waterproof. They are mildew-resistant, stain-resistant, and colorfast. Cleaning is not recommended as it will damage the waterproof coating. Waterproof - The waterproof awning has a PU coating on the surface, which will prevent water from penetrating the product. It is important that the shade sail has a slope, the installation angle is 20 to 40 degrees, and the tension is as tight as possible. It is not recommended for use during thunderstorms, heavy rain, storms, or snowy days. UV Protection - Blocking over 95% of UV rays, the awning is designed to provide sun protection and is ideal for outdoor use, such as patios or gardens. High Quality - High-quality workmanship with strong seams. Each corner has a stainless steel D-ring for easy installation. They are easily attached to trees, fences, posts, walls.