The rattan is not chemically treated and is therefore a natural product. Its natural colour is light brown. No special protection or coating is applied. Therefore, the outdoor exposure will reduce the life span, shape and colour of the product, the latter becoming more greyish over time. To reduce this process you can treat the rattan with oil or TPS.
Rattan is a semi-exterior material, which means that the product is designed for outdoor use in summer and should be taken indoors during the colder, wetter seasons.