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Kapok - Silk of Cotton

Kapok (Kay-pok) also known as Java Cotton or Silk Cotton, is a naturally occurring fibre similar to cotton produced by the nuts/ fruit of the Ceiba tree.

A Deciduous tree that is native to Latina America & Africa but introduced to Asia, in places like Java Indonesia where Kapok used by MUJI is cultivated.

Kapok trees are tough, requiring little to no human intervention in order for it to grow, meaning we can grow and produce Kapok using just sunlight & rain, Nature's blessings rather than the addition pesticides, fertilisers and other chemical interventions often used in other common and popular fibres.

At MUJI we strive to maintain the environment our Kapok trees grow in, as close to nature's as possible by planting & spacing them in 5 metre intervals, ensuring ample room to grow into fully matured trees.

Protecting our Eco-system

The less impact we make on the environment, the more we can cultivate raw materials to leave our mark on the world, without leaving a mark on nature.

Bringing the Best of Natural Materials,

Lightweight durability

Kapok fibres weigh around 1/8th of that of cotton or other natural fibres, whilst maintaining similar fibre strength, making it the ideal source to produce a lightweight and durable material.

Self Temperature Regulating

The naturally hollow structure of Kapok fibres, allows for air to be trapped within the clothing itself, acting as a self-temperature-regulating fibre, keeping you comfortably warm in winter and cool in summer.

High Eco-Score

Unlike other natural fibres that require the whole plant to be processed, Kapok is derived from the fruit/ nut of the tree, ensuring minimal environmental impacts from cultivation processes often experienced via heavy machinery and other industrial processes.

Care Instructions for your Kapok Product


If you find it necessary to wash your Kapok product, washing it at around 40-60 degrees on a short cycle, without any enzyme added washing powders or fabric softeners is recommended.


Kapok naturally absorbs a lot of water however, it will lose strength when exposed for too long. A high speed centrifuge should be used at the end of the your washing cycle to remove as much water from the fibres as possible.


To ensure the longevity of your Kapok product, it should be left in the sun outside to dry once as much moisture is removed. Tumble dry your Kapok products once in a while for 30-40 minutes to keep the fibres soft and fluffy.


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