Create a little shelter from the sun with this HDPE shade sail. wherever you want. It is the ideal sun protection. of in all outdoor areas such as garden. Terrace. Playground or balcony can be used. The 100% HDPE (high density polyethylene) shade sail protects you from direct sunlight. lets enough wind through and is water permeable. The HDPE is specially treated. therefore it is mildew and UV resistant. The shade sail is easy to install using the stainless steel fasteners (on each corner) and the included ropes.