For many years now since we started making futon back in the early 90's we have always used natural fibres in all our futon mattresses.
This is list of just some of the fibres that go into our Natural Mattresses.
Cotton - Is almost pure cellulose, with softness and breathability that have made it the world's most popular natural fibre. Fibre length varies from 10 to 65 mm, and diameter from 11 to 22 microns. It absorbs moisture readily, which makes cotton clothes comfortable in hot weather, while high tensile strength in soap solutions means they are easy to wash.
Lambs Wool: has natural crimpiness and scale patterns that make it easy to spin. Fabrics made from wool have greater bulk than other textiles, provide better insulation and are resilient, elastic and durable. Fibre diameter ranges from 16 microns in superfine merino wool (similar to cashmere) to more than 40 microns in coarse hairy wools.
Latex: foam is made from rubber tree sap, which is also called rubber serum. After the serum is collected, the trees' bark heals rapidly. Rubber trees can yield latex for as long as 30 years. When the trees are harvested, the land is replanted.
Coir: fibres measure up to 35 cm in length with a diameter of 12-25 microns. Among vegetable fibres, coir has one of the highest concentrations of lignin, making it stronger but less flexible than cotton and unsuitable for dyeing. The tensile strength of coir is low compared to abaca, but it has good resistance to microbial action and salt water damage.