Many of our outdoor chairs have opted to use materials like polyester webbing & cord, which are traditionally used in ship building. These materials can withstand the harsh outdoor elements so they are more durable. Making these materials good alternative for PE rattan / wicker.
To prevent outdoor chairs from blowing away by strong wind, some people have resorted to increasing its weight or even bolt it onto the ground. If wind can blow through the furniture, there is no need to fight against it. Using webbings in an open weave creates no wind resistance, so strong wind has very little effect on them. You do need to bring all the cushions and pillows inside though.