We recently found this fantastic article about Astral Buoyancy founder Philip Curry and the rediscovery of using kapok as filler for PFD's. Kapok is a material that was used extensively during the second world war for a variety of different products including pfd's, car seats, and pillows. What is kapok? It is a natural fibre found in the Indonesian rain forest and harvested from the seedpods of the ceiba tree. In its raw form, it looks like a feathery ball of cotton. Kapok is naturally buoyant, with a high resistance to water and decay. There are also great benefits for the environment as it produces little waste, is easily recycles and growing it requires no chemicals. With so many companies touting their "greenness" will they start using this material as well? Astral Buoyancy is convinced it is the way to go for sure. We will see. Thanks to Playak for the link.