Kapok fiber is totally natural since the fiber is taken from the kapok tree pod. It comes with a natural ability to resist, mildew, mold, mites, and dust. You can tell that the kapok fiber is organic because there is no need to use a chemical to treat the fiber. It is also comfortable enough to support your body and head. It is used a lot to stuff pillows and mattresses.
Choosing kapok fibre / silk cotton means that you are being friendlier to the environment. Kapok tree does not need any pesticides or irrigation to grow properly. choosing kapok fiber also means that you are friendlier to the animal. It is different from animal fiber like silk, down, or wool that might harm the animals during production.
If you have a pillow or mattress with kapok fibre / silk cotton stuffing, the fiber will last forever. You only need to change the mattress or pillow shell to make a new one from old kapok fiber.