I mostly use natural Material with natural coloring. The fabrics are not heavy chemical colored, this maintains the durability of each fabric. But if you expose our natural fabric to alot of sunlight the colors might weaken. To our natural fabrics we have: "Hemp, Bamboo, Linen, Cotton, Sheep Wool, Silk" Most of this materials are woven by hand. You can see the difference on each fabric line. The lines are not 100% the same like machine woven. Our natural materials are 100% non allergic, antibacteral and skin friendly. Doesnt smell and will not shrink when washed.