Wide range of use: this outdoor shade sail can be used on patios, lawns, gardens, backyards, swimming pools, decks, patios, parks, stations or any other outdoor area to keep you cool in the summer. Effective protection is made from UV resistant high density polyester shade fabric with strong stitching and durable stainless steel D-rings at each corner. The shade sail cover is square and has curved sides to improve pull and prevent sagging. The fabric is breathable, blocking 95% of UV rays and allowing air and light to pass through for a more comfortable environment. Waterproof: The fabric is treated to block both rain and sunlight and the shade sails need to be tilted in low and high positions to prevent water being thrown out during installation. Easy to install: Secure the D-ring of the shade sail to your structure with the included rope. Four runners are included in the package. Care: Wash with mild water, do not scrub with a hard brush, do not put it in the washing machine and dry.