All our baskets are braided from Rattan, which is a sustainable material from Asia. It is a very solid and weatherproof material. In the old days it was called rattan. Indoor rattan baskets need no maintenance. Cleaning: The basket can be sprayed through and then with a soft brush given Vaseline oil. It maintains the curve and promotes color. For outdoor use, it is good to give them an outdoor oil a few times a year. Then they last longer. The basket has the best of being lifted slightly up from the ground so that it does not stand directly on the ground.